	     ( 6)
		 . 
		dbell(at)pdact.pd.necisa.oz.au
		23  1992
		  
		http://beluch.ru


          .           5,              ,      ,         .

   5      .        c/5  2c/5,        c/5.        5,    c/5.

  2c/5        5.     23  1991 .      ,     .   -     5, ,   ,  ,        .

   5   .

[      5 ( 2c/5)]
 ......O.O..
 ...O....O..
 ..OOO....O.
 .O.O.......
 OO..OO....O
 .OO..OOOOO.
 ...........
 ...........
 ...........
 .OO..OOOOO.
 OO..OO....O
 .O.O.......
 ..OOO....O.
 ...O....O..
 ......O.O..


     ,    -    .         c/2, c/3, c/4,  c/12,      .  5 -  ,    ,    .

      ,  ,   ,    . ,          ,       ,   ,     .    .

[      5 ( 2c/5)]
 .....OO..O...        .....OO..O.......        .....OO..O.........
 .....OOO.....        .....OOO.........        .....OOO...........
 .OOO.O.......        .OOO.O...........        .OOO.O.............
 O.O.O.OOO.O..        O.O.O.OOO.O......        O.O.O.OOO.O........
 O...OOOOOO...        O...OOOOOO.......        O...OOOOOO.........
 O............        O................        O..................
 .O.O.........        .O.O.............        .O.O...............
 .............        .................        ...................
 .O.O.........        .O.O.............        .O.O...............
 O............        O................        O..................
 O...OOOOOO...        O...OOOOOO.......        O...OOOOOO.........
 O.O.O.OOO.O..        O.O.O.OOO.O......        O.O.O.OOO.O........
 .OOO.O.......        .OOO.O...........        .OOO.O.............
 .....OOO.....        .....OOO.........        .....OOO...........
 .....OO..O...        .....OO..O.......        .....OO..O.........
 .............        ...............OO        ...................
 ..........OO.        ..........OO...OO        ..........OO....O.O
 ..........OOO        ..........OOO....        ..........OOO..O...
 ..........OO.        ..........OO...OO        ..........OO...O..O
 .............        ...............OO        ................O..
 .....OO..O...        .....OO..O.......        .....OO..O.........
 .....OOO.....        .....OOO.........        .....OOO...........
 .OOO.O.......        .OOO.O...........        .OOO.O.............
 O.O.O.OOO.O..        O.O.O.OOO.O......        O.O.O.OOO.O........
 O...OOOOOO...        O...OOOOOO.......        O...OOOOOO.........
 O............        O................        O..................
 .O.O.........        .O.O.............        .O.O...............
 .............        .................        ...................
 .O.O.........        .O.O.............        .O.O...............
 O............        O................        O..................
 O...OOOOOO...        O...OOOOOO.......        O...OOOOOO.........
 O.O.O.OOO.O..        O.O.O.OOO.O......        O.O.O.OOO.O........
 .OOO.O.......        .OOO.O...........        .OOO.O.............
 .....OOO.....        .....OOO.........        .....OOO...........
 .....OO..O...        .....OO..O.......        .....OO..O.........


       .
    -    .         .       .          .

, ,  ,               .         .

    ,         5    ,                . -     ,             ,      ,  .  ,       c/2, c/3, c/4, 2c/5,  c/12,   ,   .

  ,   ,       c/3    9,      6,     6     2,           . ,             c/2.

            .     ,     ,    ,         ,  -  ,  ,          .         .

               .    .

[, , ,  ,     ]
 ...OO..       OO.....        .O.....        ...O.        ...O..
 ..OO.OO       OO.....        .O.....        .O.O.        ...O.O
 ...OOOO       .......        .O.....        ..OO.        ...OO.
 ....OO.       ....O..        .......        .....        ......
 .......       ..O...O        ...OO..        .....        ......
 .......       .O.....        .O....O        ..OO.        .O..O.
 .......       .O....O        O......        .OOOO        O.....
 ..O....       .OOOOO.        O.....O        OO.OO        O...O.
 .O.O...                      OOOOOO.        .OO..        OOOO..
 O..O...
 .OO....
 .......
 ....O..
 ..O...O
 .O.....
 .O....O
 .OOOOO.


            .           (,    ). ,              ,       .  ,   ,    - ,                    .

     ,      ,   .    ,          10    .  ,           .

  ,   ,         .       ,      4 -        .         ,    ,        .

       ,       .        8,      .

[   ]
     A                B               C
 OOOO.....        .OO.......        .OO..
 O...O....        OO.OO.....        OO.OO
 O........        .OOOO.....        .OOOO
 .O..O..OO        ..OO......        ..OO.
 ......OOO        ..........        .....
 .O..O..OO        ..........        .....
 O........        ....O.....        ....O
 O...O....        ...OO.....        ...OO
 OOOO.....        ..OO......        ..OO.
                  ...OO.....        ...OO
                  ..........        .....
                  ..........        .....
                  ..........        .....
                  ..........        .....
                  ....OOOOO.        .OO..
                  ....O....O        OO.OO
                  ....O.....        .OOOO
                  .....O....        ..OO.


         D                    E
 ...OO............        .OO.....
 ..OO.OOOO........        OO.OOOO.
 ...OOOOOO........        .OOOOOO.
 ....OOOO.........        ..OOOO..
 .................        ........
 .................        .....OO.
 OOOOOOOOOO.......        ........
 O................        ..OO....
 O................        .O....OO
 .O...............        .O....O.
 .................        .OO.....
 .................        ...O....
 .................        ........
 ...OO............        ...O....
 ..OO.OOOO...OO...        .OO.....
 ...OOOOOO..OO.OOO        .O....O.
 ....OOOO....OOOOO        .O....OO
 .............OOO.        ..OO....
                          ........
                          .....OO.
                          ........
                          ..OOOO..
                          .OOOOOO.
                          OO.OOOO.
                          .OO.....


  ,   ,   .

 A:  ,   12. ,    .

 B:   12,   . ,    24 .

 C:   20,   . ,     140,     ( ,    2000 ).

 D:   20,   . ,    40 .

 E:   32,   . ,  4      128 .     .


    ,     ,     12, 20, 24, 32, 36, 40, 48, 60, 64, 72, 80, 84, 96, 120, 128,  140.         ,    ,    .   ,    -   (),      ,     .        ,     ,           .     ,         .

[    32]
 .................................OOOOO.
 .............OOOO................O....O
 .O..........OOOOOO...............O.....
 O..........OO.OOOO................O....
 O.....O.....OO.........................
 OOOOOO.................................
 .......................................
 .......................................
 ....OOO................................
 .....OO................................
 ..O....................................
 .OO....................................
 OO.....................................
 .OO....................................
 .......................................
 .......................................
 .......................................
 .OO....................................
 OO.....................................
 .OO....................................
 ..O....................................
 .....OO................................
 ....OOO................................
 .......................................
 .......................................
 OOOOOO.................................
 O.....O.....O..........................
 O..........O...........................
 .O.........O.....O.....................
 ...........OOOOOO......................


[    60]
 ..................O....................
 .................O.....................
 .................O...O.................
 .................OOOO..................
 .......................OOO.............
 .......................OO.OO...........
 .......................OOO.............
 .O........OO.....OOOO..................
 O........OOOO....O...O.................
 O...O...OO.OO....O.....................
 OOOO.....OO.......O....................
 .......................................
 .......................................
 .......................................
 ....O..................................
 ..OO...................................
 ..O....................................
 ..O....................................
 ...O.............................O.....
 ................................O......
 ................................O.....O
 .O..............................OOOOOO.
 O......................................
 O...O..................................
 OOOO.............OOOO..................
 .................O...O.................
 .................O.....................
 ..................O....................

 
  ,    ,  ,         .
     -       .                .

             .    ,    ,      .   ,         .           .

      ,     ,     .   ,    " ".        ,    -  .

         N.
   ,     ,   ,      .        ,    ,        .        ,    .     2N.

       ,    ,     ,             .    ,     ,      ,     . (      ,             ,   "".        ,    .)

 -     80,        40,         .      40 -   ,      40 -   .

[  80,   ]
 $$$$$$...OOO$$$........
 $$$$$$..OOOOO$$$.......
 $$.........O$$$.OO.OOO$$$.......
 $........OO.......O...O$.....OOO$..OO$$$$
 $.......OOOO.....O$.........OOOOO$$$$$...
 $......OO.OO.....O....O$...OO.OOO$$$$$...
 $.......OO.......OOOOO$.....OO$$$$$......
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 $$..O$$$$$$$$.
 $$....O$$.....OO$$.....OO$$.....
 $$OO..O....OO$$OO$$...OO.OOOO$$.
 $.........O.....O.OOO..O$........O.OO$$..OOOOOO$$.
 $........OO..O.O..OOOOO.O$..OO......O$$...OOOO$$..
 $.........OO...O.....OO.OO$.OO....OOO$$$$.........
 $$OOO.......O..O$...O...OOO$$$$$
 $$$$$.O$$$$$..
 $$$.OO$........O$$$$$..
 $........OO$$$$$..OO...OOOOO.OO$.........
 $.......OOOO....OOOO$$$$..OOO..OO..OOOO$$
 $......OO.OO....O...O$$$$..OOOO..O...O$$.
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 $$......O..O.....OOOOOO$$$...OO$$........
 $$$....OO.OOOO$$$$$$...
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 $$$$$$$$......OO.OOO........OO..
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 $$..OOOO.....O$$$$..O$$.........
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 $$.....OOO$$O$$......OOO$$......
 $$....OO...O$........OOO$$....O$$........
 $$...OO..O.O$....O..O.OOOO$$...O$$.......
 $$....O.....O.....OO.....O.O.....OOO$$$$$
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 $$.........O$....OO.O...OO$$$$$.
 $$.......O$.........OO..O$$$$$..
 $$$.O..O$.OO$$$$$......
 $$..OO......O$$$$$$$...
 $$.OO.OO....O...O$$$$$$.........
 $$..OOOO....OOOO$.........OOOOO.......OOO.....O$$$
 $$...OO$$........O....O......O.....O...O$$........
 $$$$$...O$..O...O$$$...
 $$$$$....O...O$.O....O$$........
 $$.OO$$$...O$...OOOOO$$.........
 $.........O....O$$$$$$$.........
 $........O$$$$$$$$.....
 $........O.....O$$$$$$$.........
 .O..O.....OO......OOOOOO$$$$$$$$
 O........OOOO$$$$$$$$$.
 O...O...OO.OO$$$$..OOO..OOO.....O$$$.....
 OOOO.....OO$$$$....O$.O.O$$$....
 $$$$$......O...OO..OOO.OO$$$....
 $$$$$$....OO$$$........
 ......OO$$.......OOO$$$$$$......
 ....O....OOO...OO$........OOO$$$$$$......
 ..OO....OOOOO...O.OOO$.OO..O..OO$$$$$$...
 ..O......OO..O...OOO$.......O..O$$$$$$...
 ..O.........OO....O$.......O...O$.........OOOOOO$$$........
 ...O..O$$$..O$$O.....O$$$.......
 .....O$$.........OOOO$$.O$$$$...
 $$$..O...OO$$...O....O$$$.......
 .O..O$$.....O...O$$........OO$$$.........
 O.........OO$.......O$$$$$$$....
 O...O....OO.OOO$....O....O$...O$$$$$.....
 OOOO......OOOOO$....OOOOO$..O...O$$$$$...
 $.OOO$$$.O$$$$$........
 $$$$.....O....O$$$$$...
 $$$$.....OOOOO$$$$$....


    , ,   .
 -     80.           40,         80,       .              .

[  80,   ]
 $$$$$.OOOOO$$$$..
 $$$$$.O....O$$$$.
 $.......OOO$$$.O$$$$......
 ......OOOO......OOOOO$....OOOOO$..O...O$$$$.

 ......O...O....OO.OOO$....O....O$...O$$$$...
 ......O.........OO$.......O$$$$$$..
 .......O..O$$.....O...O$$........OO$$.......
 $$$........O$$........O....O$$.....
 $$$$$$......O$$$.
 .........OO...OO$$$$$O.....O$$.....
 ........O.O......O$........O..O$$......OOOOOO$$......
 ........O......O..O$....OO.OOOO$$$$$........
 ........OOO.......OO$.........O$$$$$........
 $.......OO$......OOOO$$$$$.........
 $$$.....O..O$$.......OO$$$
 $$$$$$......O.O$$.........
 $$$$$$.OO.....O$$.........
 ......OOOO.....OO$$$$...OO.O..OOO$$.........
 ......O...O...OO.OO$$$$..O..OO$$$..
 ......O........OOOO$$$$.....OO$$$..
 .......O..O.....OO......OOOOOO$$$...O$$$....
 $$....O.....O$$$$$$.......
 $$....O$$$$$$$...
 $$.....O....O$$$$$$.......
 $$.......OO$$$$.O.....OOOOO$.......
 $$$$$$.........O......O....O$......
 $$$$$$.........OOO....O$$.
 $$$$$$$.......O...O$......
 $$$$$$$.........O$........
 $$$$$$$$$........
 $$$$$$$$..OOOOO$.
 $$$$$$$$..O....O$
 $$$$$$$$..O$.....
 $$$$$$$$...O...O$
 $$$$$$$$O....O$..
 $$$$$$$.........O$........
 $$$$$$$.........OOO$......
 $$$$$$$$$........
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 $$$$$$$$OOOOO........OO...
 $$$$$$$$O....O.......OO...
 $$$..OOO$$$$.....O$.......
 $$.OOOO......OOOOO$$$$.....O...O.........O..
 $$.O...O....OO.OOO$$$$.......O.........O...O
 $$.O.........OO$$$$$.........O.....
 $$..O..O$$$$$$......O....O
 $$$$$.........O$......OO$....OOOOO.
 $$......O$$$..OO$.....O.O$.........
 $$....OOO$$$.O.O$.....O$..O........
 $$...O...O.........O$$$$.........O...O......
 $$...O....OOO....OO$$$$.........O$.
 $$...OO.O.OOO.....O.O..O$$$$....O....O......
 $$.....O...OO......OO..O$$$$....OOOOO.......
 $$......O.O$$$$$$.........
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 $$.O...O...OO.OO$$OOO.........O.O$$.........
 $$.O........OOOO$.........OOOOO........O$$$.
 $$..O..O.....OO$.........OO.OOO$..OOOOO$$...
 $$$$$...OO$.....O....O$$..
 $$$$$$$O$$.......
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 $........OOOOOO$$$$.........O$$....
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 $........O$$$$$$$.........
 OOOO.....OO........O....O$$$.OO$$$$
 O...O...OO.OO........OO$$$...O.O...OO...OOO$$........
 O........OOOO$$$$...O.........O...O$$.......
 .O..O.....OO$$$$$..OO....O$$.......
 $$$.......O$$.........O.O$$........
 $.......O$........OOO$$$$$.........
 ...OO.......O...O.O$......OOOOO$$$$$........
 ..O.O...OO...OOOO.O.OO$....OO.O.OO$$OO$$$...
 ..O$.OO.OOO.O$.....OO...O$........O....O$$$.
 ..OOO........OO....OO$......OO...O$.......O$$$.......
 $.........O$.........O.O$........O.....O$$$.
 $$$........OO$$OOOOOO$$$..
 $$$$$$$$$........
 $.OOO$$$$$$$$....
 OOOO......OOOOO$....OOOOO$$$$$$....
 O...O....OO.OOO$....O....O$$$$$$...
 O.........OO$.......O$$$$$$........
 .O..O$$.....O...O$OOOOO$$$$........
 $$$..O$..O....O$$$$.......
 $$$$.....O$$$$$..
 $$$$......O...O$$$$.......
 $$$$........O$$$$.........


     ,    ,   40 * 2^N. ,         160,         80        80.   ,         ,      80,       ,     ,      80.

           .     2N      N,    M*2^N    3^N   M,  M -    .         ,        .       3^N  2^N.     ,       .

        ,          .         ,    .        ,      ( )  .            ,      .          ,  .

 ,      48,      96.  -    48.
   ,           .         ,       ,  .          ,   ,    .
  ,       ,       .            48 * 2^N.

[   96]
 $$$$$$$$$$$$$$$$.......OO$$$$$$$$$$....
 $$$$$$$$$$$OOOOOO$$$$.........O....O$$$$$$$$$$..
 $$$$$$$$$$$O.....O$$$$.......O$$$$$$$$$$........
 $$$$$$$$$$$O$$$$$...O.....O$$$$$$$$$$..
 $$$$$$$$$$$.O....O$$$$.......OOOOOO$$$$$$$$$$...
 $$$$$$$$$$$...OO$$$$$$$$$$$$$$$........
 $$$$$$$$$........OOOO$$$$$.O..O$$$$$$$$$$$......
 $$$$$$$$$........O...O$$$$.........O$$$$$$$$$$$$
 $$$$$$$$$........O$$$$$...O...O$$$$$$$$$$$......
 $$$$$$$$$.........O..O..OO........O.O$$$....OOOO$$$$$$$$$$$.......
 $$$$$$$$$$....OOO.........OO$$$$OOO$O$$$$$$$$$$.
 $$$$$$$$$.........O..O..OO.........O$$$$.OO.OO.........OO$$$$$$$$$.........
 $$$$$$$$$........O$$$$$.........OOO$OO$$$$$$$$$$
 $$$$$$$$$........O...O$$$$.........OOOO$$$$$$$$$$$.......
 $$$$$$.......OOOOOO$$.....OOOO$$$$$O...O$$$$$$$$$$$......
 $$$$$$.......O.....O$$$$$.........O.O$......O$$$$$$$$$$$$
 $$$$$$.......O$$$$...OO$$.OO$.......O..O.........OOOO$.........O$$$$$$$$...
 $$$$$$........O....O$$$......OO.OOOO$.......O$$$OOOOOO$.........OO$$$$$$$$.
 $$$$$$$OO$$$.........OOOOOO$$$$.......OO.OOOO$........OO$$$$$$$$..
 $$$$$.....OOOO$$$$$...OOOO$$$$.........OO$$$$$$$$$$......
 $$$$$.....O...O$$$$$$$$$$$$$$$$$$$$$...
 $$$$$.....O$$$$$$$$$.....O.O....O$$$$$$$$$$$....
 $$$$$......O..O..OO........O.O$$$$$$$.......OO...OO$$$$........O$$$$$$.....
 $$$$$$.OOO.........OO$$$$$$$.......O....O.O$$$$........OO$$$$$$...
 $$$$$......O..O..OO.........O$$$$$$$$$$$$$...OO$$$$$$....
 $$$$$.....O$$$$$$$$$$$$$$$$$$$$$.......
 $$$$$.....O...O$$$$$$$$$$$$.....OO$$$$$$$$......
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 $$$$$$$$$O.O$$$$$$$.......OO$....O$$..O.O$$$$$$.
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 $$$.........O$$...O$$...O$$...O$....O.O$$.O$$$$$.....OO$...O.O$$$$.........
 .O..O$$$...O.O$$.O.O$$.O.O$$.O.O$....OO$$$$$$$.......O$....OO$$$$$
 O$$$.......O.O$$.O.O$$.O.O$$.O.O$....O$$$$$$$$$$$$$$.....
 O...O.......O$$......O$$...O$$...O$$...O$$$$$$$$$$$.....O$$$$.....
 OOOO....O...OOO$$$$$$$$$$$......OO$$$$$$$$$..O...O$$$$...
 ......OO.....OO$$$$$$$$$$$.....O.O$$$$$$$$$.O$$$$........
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 OOOO....O...OOO...O........OOO.O$$$$$$$$$$$$$$$$$$$$$$$$.
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 O$......O.O........OOOO$$$$$$$$.OO$$$$$$$$$$$$$$$........
 .O..O$$....O.O$$$$$$$$O.O$$$$$$$$$$$$$$$........
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 $...O$$$$$$OO$$$$$$$$$$$$$$........O.O$$$..O.....O.......
 $...O....O$$$$$...O....O$$$$$$$$$$$$$$......O$$$....O$...
 $...OOOOO$$$$$...O$$$$$$$$$$$$$$$$$$........O....O.......
 $$......O$$$$....O.....O$.......OO$$$$$$$$$$$$$$$$.....OO.........
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 $$$$$$$$$$$$$$$$$$$..OOO......O.......O..O$$$$$$
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 $$$$$$$$$$$$$$$$$$......O...O.......O.........O$$$$$$....
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 $$$$$$$$$$$$$$$$$$$.....OOOOOO........O.OO$$$$$$
 $$$$$$$$$$$$$$$$$$$....OO.OOOO.........OO$$$$$$.
 $$$$$$$$$$$$$$$$$$$.....OO$..O$$$$$$...
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 $$$$$$$$$$$$$$$$$$$$.....OOOO$$$$$$....
 $$$$$$$$$$$$$$$$$$$$......OO$$$$$$.....


               .        ,     ,    ,    ,      .

       ,     .       ,   .          .         ,         ,  , ,    ,    ,           .             .

          ,      ,   .       ,        .     ,   - .     8   ,    .

[    8]
 .OO......        ............OO...
 OO.OOO...        ...........OO.OOO
 .OOOOO...        ............OOOOO
 ..OOO....        .............OOO.
 .........        .................
 .........        ..........OOO....
 .OOOOO...        ..OO.O.OOOO.O....
 .O.......        .O...............
 .O.......        OO.OO............
 ..O......        .OOO.OO.O........
 ....O....        ..O....O.........
 .........        .........O.......
 .........        ..O....O.........
 ...OO....        .OOO.OO.O........
 ..OO.OOOO        OO.OO............
 ...OOOOOO        .O...............
 ....OOOO.        ..OO.O.OOOO.O....
                  ..........OOO....
                  .................
                  .............OOO.
                  ............OOOOO
                  ...........OO.OOO
                  ............OO...


     -   ,   ,   ,   .

,  ,             , ,   ,    .      ,       .   ,    ,  " " (  ,    - ). ,   -    .

  ,        ,          .       ,             ,             . ,  "  "     ,    ,    .

  ,     .

[ ,   ,   ]
 .OO....................
 OO.OOO.................
 .OOOOO................O
 ..OOO...............OO.
 .....................OO
 .......................
 .OOOOO.................
 .O......O...O...O...O..
 .O......O...O...O...O..
 ..O.....O...O...O...O..
 ....O..................
 .......................
 .....................OO
 ...OO...............OO.
 ..OO.OOOO.............O
 ...OOOOOO..............
 ....OOOO...............


    ,     18   2c/3.
     ,  ,        .          (  ).    ,       .      - ,     ,        .  ,  ,    ,  .  -   ,       ,     ,   .

                ,  .
,   ,    ,      .     ,    ,       2/3    . , ,  ,   ,   ,    (  )  .

        ,      ,    .  -      292.   -  ,  ,  ,  ,  ,   .

[   292]
 .......................OOOO.
 .......................O...O
 ...............O.......O....
 .............O...O......O..O
 ............O...............
 ............O....O..........
 ............OOOOO...........
 ............................
 ............................
 ...........O................
 ..OO.O...OO.OO..............
 .O..OOOOO.O.................
 .O..O.OO.OO.................
 .OO...OOO.OO........OO.O..OO
 ...O......OO.......O.O.OOOOO
 ..........OO...OOO.O........
 ...O......OO.......O.O.OOOOO
 .OO...OOO.OO........OO.O..OO
 .O..O.OO.OO.................
 .O..OOOOO.O.................
 ..OO.O...OO.OO..............
 ...........O................
 ............................
 ............................
 ............OOOOO...........
 ............O....O..........
 ............O...............
 .............O...O......O..O
 ...............O.......O....
 .......................O...O
 .......................OOOO.


,     292 -    8.  , 292 -  4 (mod 8).   .
,           .   ,   ,   .     ,         8,      -     4.
       ,          4 .    ,      4    8.          ,    .        8, ,  ,   ,    ,     8.

                   .
(,   ,     .) ,       ,   ,     ,   . ,     2000   
(  )    .   ,      .

       ,   ,      .             .          .    .

[       ]
 ........................OOOOOO.
 ........................O.....O
 ........................O......
 .........................O....O
 ...........................OO..
 ...............................
 ...............................
 ...............................
 ...............................
 ...............................
 ...............................
 ...............................
 ..OOOOOO.......................
 ..O.....O......................
 ..O............................
 ...O....O......................
 .....OO........................
 ...............OO.O..OO........
 ..OOOOO.......O.O.OOOOO........
 .OOOOOOO..OOO.O................
 OO.OOO.O......O.O.OOOOO........
 .OO............OO.O..OO........
 ...............................
 ...............................
 ...............................
 OOOOO..........................
 O....O.........................
 O..............................
 .O...O.........................
 ...O...........................


     ,     ,      .     .

        ,    .  -    90 .     ,    .

[ ,       ]
 ...........OO..
 .........O....O
 ........O......
 ........O.....O
 ........OOOOOO.
 ...............
 ...............
 ...............
 ...............
 ...............
 ......O........
 ....OO.........
 .....OO........
 ...............
 ...OO..........
 .O....O........
 O..............
 O.....O........
 OOOOOO.........


        ,   .  -    90 .       ,   ,     .  ,   ,     ,    .

[ ,    ]
 ..................OOOO..
 .................OOOOOO.
 ................OO.OOOO.
 .................OO.....
 ........................
 ........................
 ........................
 ........................
 ........................
 ........................
 ........................
 ........................
 ........................
 ........................
 ........................
 ........................
 ........................
 ......O.................
 ....OO..................
 .....OO.................
 ........................
 ...OO...............OOO.
 .O....O............OOOOO
 O.................OO.OOO
 O.....O............OO...
 OOOOOO..................


           ,   .  -    90 .      ,   ,    .

[ ,    ]
 ..............................................OOO.
 .............................................OOOOO
 ............................................OO.OOO
 .............................................OO...
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ..................................................
 ......O.O.........................................
 .......OO.........................................
 .......O..........................................
 ..O..O............................................
 .O................................................
 .O...O............................................
 .OOOO.............................................
 ..................................................
 ..................................................
 ..........OO......................................
 .........OO.OOOO..................................
 ..........OOOOOO..................................
 ...........OOOO...................................


   (   )         .

                     .    .


      .           ,       ,        .     ,  ,          .                .     ,               ,  ,  .

             1136.        ,      .             ,              ,         .

[   1136,       ]
 $$$$$$$$$$$..OOOOOO.........
 $$$$$$$$$$$..O.....O........
 $$$$$$$$$$$..O$....
 $$$$$$$$$$$...O....O........
 $$$$$$$$$$$.....OO$
 $$$$......OO$$$$$$$.........
 $$$$....O....O$$$$$$$.......
 $$$$...O$$$$$$$$...
 $$$$...O.....O$$$$$$$.......
 $$$$...OOOOOO$$$$$$$........
 $$$$$$$$$$$$.......
 $$.......OO.......OO$$$$$$$$.........
 $$.....O....O....OOOO$$$$$$$$........
 $$....O.........OO.OO$$$$$$$$........
 $$....O.....O....OO$$$$$$$$...OOOOOO.
 $$....OOOOOO$$$$$$$$$O.....O
 $$$$$$$$$$$$O......
 $$$$$$$$$$$$.O....O
 $$$$$$$$$$$$...OO..
 $$$$$$$$$$$$.......
 $$$$$$$$$$$$.......
 $$$$$$$$$$$$.......
 $$$$$$$$$$$$.......
 $$$$$$$$$$$$.......
 OOOOO$$$$$$$$$$$$..
 O....O$$$$$$$$$$$$.
 O$$$$$$$$$$$$......
 .O...O$$$$$$$$$$$$.
 ...O$$$$$$$$$$$$...
 ..OOO$$$$$$$$$$$$..
 .OOOO.......OO.O..OO$$$$$$$$$$.......
 OO.OO......O.O.OOOOO$$$$$$$$$$.......
 .OO....OOO.O$$$$$$$$$$$.....
 $.O.O.OOOOO$$$$$$$$$$.......
 $..OO.O..OO$$$$$$$$$$.......
 $$$$$$$$$$$$.......
 $$$$$$$$$$$$.......
 ..OOOOOO$$$$$$$$$$$.........
 ..O.....O$$$$$$$$$$$........
 ..O$$$$$$$$$$$$....
 ...O....O$$$$$$$$$$$........
 .....OO$$$$$$$$$$$$
 $$$$$$$$$$$$.......
 $$$$$$$$$$$$.......
 $$$$$$$$$$$$.......
 $$$$$$$$$$$$.......
 $$$$$$$$$$$$...OO..
 $$$$$$$$$$$$.O....O
 $$$$$$$$$$$$O......
 $$....OOOOOO$$$$$$$$$O.....O
 $$....O.....O....OO$$$$$$$$...OOOOOO.
 $$....O.........OO.OO$$$$$$$$........
 $$.....O....O....OOOO$$$$$$$$........
 $$.......OO.......OO$$$$$$$$.........
 $$$$$$$$$$$$.......
 $$$$...OOOOOO$$$$$$$........
 $$$$...O.....O$$$$$$$.......
 $$$$...O$$$$$$$$...
 $$$$....O....O$$$$$$$.......
 $$$$......OO$$$$$$$.........
 $$$$$$$$$$$.....OO$
 $$$$$$$$$$$...O....O........
 $$$$$$$$$$$..O$....
 $$$$$$$$$$$..O.....O........
 $$$$$$$$$$$..OOOOOO.........


    ,   ---       --- .
 ,                ,            .        ,     .

          ,  ,    .          9N    3N     .     96.     ,     ,      ,    .        ,           .

        N=1.      9    3  ,    96.        1232.       .

[  1232,   ]
 $$$$$$$$$$$$.OOOOOO.........
 $$$$$$$$$$$$.O.....O........
 $$$$$$$$$$$$.O$....
 $$$$$$$$$$$$..O....O........
 $$$$$$$$$$$$....OO$
 $$$$$.....OO$$$$$$$.........
 $$$$$...O....O$$$$$$$.......
 $$$$$..O$$$$$$$$...
 $$$$$..O.....O$$$$$$$.......
 $$$$$..OOOOOO$$$$$$$........
 $$$$$$$$$$$$$......
 $$$$.....OO$$$$$$$$.........
 $$$$....OOOO$$$$$$$$........
 $$$$...OO.OO$$$$$$$$........
 $$.......OO$.....OO$$$$$$$$...OOOOOO.
 $$.....O....O$$$$$$$$$........O.....O
 $$....O$$$$$$$$$$....O......
 $$....O.....O$$$$$$$$$.........O....O
 $$....OOOOOO$$$$$$$$$$..OO..
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 OOOOO$$$$$$$$$$$$$.
 O....O$$$$$$$$$$$$$
 O$$$$$$$$$$$$$.....
 .O...O$$$$$$$$$$$$$
 ...O$$$$$$$$$$$$$..
 ..OOO$$$$$$$$$$$$$.
 .OOOO.......OO.O..OO$$$$$$$$$$$......
 OO.OO......O.O.OOOOO$$$$$$$$$$$......
 .OO....OOO.O$$$$$$$$$$$$....
 $.O.O.OOOOO$$$$$$$$$$$......
 $..OO.O..OO$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 ..OOOOOO$$$$$$$$$$$$........
 ..O.....O$$$$$$$$$$$$.......
 ..O$$$$$$$$$$$$$...
 ...O....O$$$$$$$$$$$$.......
 .....OO$$$$$$$$$$$$.........
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$$$$$$$$$$$$......
 $$....OOOOOO$$$$$$$$$$..OO..
 $$....O.....O$$$$$$$$$.........O....O
 $$....O$$$$$$$$$$....O......
 $$.....O....O$$$$$$$$$........O.....O
 $$.......OO$.....OO$$$$$$$$...OOOOOO.
 $$$$...OO.OO$$$$$$$$........
 $$$$....OOOO$$$$$$$$........
 $$$$.....OO$$$$$$$$.........
 $$$$$$$$$$$$$......
 $$$$$..OOOOOO$$$$$$$........
 $$$$$..O.....O$$$$$$$.......
 $$$$$..O$$$$$$$$...
 $$$$$...O....O$$$$$$$.......
 $$$$$.....OO$$$$$$$.........
 $$$$$$$$$$$$....OO$
 $$$$$$$$$$$$..O....O........
 $$$$$$$$$$$$.O$....
 $$$$$$$$$$$$.O.....O........
 $$$$$$$$$$$$.OOOOOO.........


        ,    1136 + 96N.  -        .
  -  ,   .

         3N    N     ,       N    N  ,      8.
                 , ,       .           , ,      ,         ,  .

        ,             .     8      ,         .      ,        ,       .   ,  ,          ,       .

 -       .      1232,  ,     ,     1240.              ,      .

[  1240,   ]
 $$$$$$$$$$$$OOOOOO.........
 $$$$$$$$$$$$O.....O........
 $$$$$$$$$$$$O$....
 $$$$$$$$$$$$.O....O........
 $$$$$$$$$$$$...OO$
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$..OO$$$$$$$$.
 $$$$$O....O$$$$$$$.........
 $$$$.........O$$$$$$$$.....
 $$$$.........O.....O$$$$$$$.........
 $$$$.........OOOOOO$$$$$$$$
 $$$$$$$$$$$$$.....
 $$$$..OO$$$$$$$$$.
 $$$$.OOOO$$$$$$$$...OOOOOO.
 $$.......OO$.OO.OO$$$$$$$$...O.....O
 $$.....O....O$OO$$$$$$$$.....O......
 $$....O$$$$$$$$$$....O....O
 $$....O.....O$$$$$$$$$$OO..
 $$....OOOOOO$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 OOOOO$$$$$$$$$$$$$
 O....O$$$$$$$$$$$$.........
 O$$$$$$$$$$$$$....
 .O...O$$$$$$$$$$$$.........
 ...O$$$$$$$$$$$$$.
 ..OOO$$$$$$$$$$$$$
 .OOOO.......OO.O..OO$$$$$$$$$$$.....
 OO.OO......O.O.OOOOO$$$$$$$$$$$.....
 .OO....OOO.O$$$$$$$$$$$$...
 $.O.O.OOOOO$$$$$$$$$$$.....
 $..OO.O..OO$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 ..OOOOOO$$$$$$$$$$$$.......
 ..O.....O$$$$$$$$$$$$......
 ..O$$$$$$$$$$$$$..
 ...O....O$$$$$$$$$$$$......
 .....OO$$$$$$$$$$$$........
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$....OOOOOO$$$$$$$$$$.....
 $$....O.....O$$$$$$$$$$OO..
 $$....O$$$$$$$$$$....O....O
 $$.....O....O$OO$$$$$$$$.....O......
 $$.......OO$.OO.OO$$$$$$$$...O.....O
 $$$$.OOOO$$$$$$$$...OOOOOO.
 $$$$..OO$$$$$$$$$.
 $$$$$$$$$$$$$.....
 $$$$.........OOOOOO$$$$$$$$
 $$$$.........O.....O$$$$$$$.........
 $$$$.........O$$$$$$$$.....
 $$$$$O....O$$$$$$$.........
 $$$$$..OO$$$$$$$$.
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$$.....
 $$$$$$$$$$$$...OO$
 $$$$$$$$$$$$.O....O........
 $$$$$$$$$$$$O$....
 $$$$$$$$$$$$O.....O........
 $$$$$$$$$$$$OOOOOO.........


 -  .     1368,    .       1136      (   192)       (   40).       1136,      ,     .

[  1368,  4 ]
 $$$$$$$$$$$$.....OOOOOO.........
 $$$$$$$$$$$$.....O.....O........
 $$$$$$$$$$$$.....O$....
 $$$$$$$$$$$$......O....O........
 $$$$$$$$$$$$........OO$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$...OOOOOO.
 $$$$.........OO$$$$$$$$..O.....O
 $$$$.......O....O$$$$$$$$O......
 $$$$......O$$$$$$$$.......O....O
 $$$$......O.....O$$$$$$$$...OO..
 $$$$......OOOOOO$$$$$$$$........
 $$$$$$$$$$$$$$
 $$$.........OO$$$$$$$$$.........
 $$.......OO.........OOOO$$$$$$$$$........
 $$.....O....O......OO.OO$$$$$$$$$........
 $$....O$...OO$$$$$$$$$$
 $$....O.....O$$$$$$$$$$.........
 $$....OOOOOO$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 .....OO$$$$$$$$$$$$$...
 ...O....O$$$$$$$$$$$$$.
 ..O$$$$$$$$$$$$$.......
 ..O.....O$$$$$$$$$$$$$.
 ..OOOOOO$$$$$$$$$$$$$..
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $..OO.O..OO$$$$$$$$$$$$
 $.O.O.OOOOO$$$$$$$$$$$$
 .OO....OOO.O$$$$$$$$$$$$........
 OO.OO......O.O.OOOOO$$$$$$$$$$$$
 .OOOO.......OO.O..OO$$$$$$$$$$$$
 ..OOO$$$$$$$$$$$$$.....
 ...O$$$$$$$$$$$$$......
 .O...O$$$$$$$$$$$$$....
 O$$$$$$$$$$$$$.........
 O....O$$$$$$$$$$$$$....
 OOOOO$$$$$$$$$$$$$.....
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$....OOOOOO$$$$$$$$$$$
 $$....O.....O$$$$$$$$$$.........
 $$....O$...OO$$$$$$$$$$
 $$.....O....O......OO.OO$$$$$$$$$........
 $$.......OO.........OOOO$$$$$$$$$........
 $$$.........OO$$$$$$$$$.........
 $$$$$$$$$$$$$$
 $$$$......OOOOOO$$$$$$$$........
 $$$$......O.....O$$$$$$$$...OO..
 $$$$......O$$$$$$$$.......O....O
 $$$$.......O....O$$$$$$$$O......
 $$$$.........OO$$$$$$$$..O.....O
 $$$$$$$$$$$$$...OOOOOO.
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
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 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$$$
 $$$$$$$$$$$$........OO$
 $$$$$$$$$$$$......O....O........
 $$$$$$$$$$$$.....O$....
 $$$$$$$$$$$$.....O.....O........
 $$$$$$$$$$$$.....OOOOOO.........


  ,     (  )    ,     8.

       ?  - ,       ,       4 (mod 8).             .
    1044,     9      .

[  1044,  11 ]
 $$$$$$$$....OOOOOO.........
 $$$$$$$$....O.....O........
 $$$$$$$$....O$....
 $$$$$$$$.....O....O........
 $$$$$$$$.......OO$
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
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 $$$$$$$$$..OOOOOO.
 $$$$$$$$$..O.....O
 $$$$$$$$$..O......
 $$$$$$$$$...O....O
 $$$$$$$$$.....OO..
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$.......O..O$$$$........
 $$$$......O$$$$$..
 $$$$......O...O$$$$........
 $$$$......OOOO$$$$.........
 $$$$$$$$$.........
 $....O$$$$$$$$....
 $..O...O$$$$$$$$..
 $.O$O......OOO$$$$$$.......
 $.O....O...O...O...OOOOO$$$$$$......
 $.OOOOO...O.......OO.OOO$$$$$$......
 $.........O....O...OO$$$$$$.........
 $.........OOOOO$$$$$$$.....
 $O$$$$$$$$........
 .OO.O...OO.OO$$$$$$$$......
 O..OOOOO.O$$$$$$$$.........
 O..O.OO.OO$$$$$$$$.........
 OO...OOO.OO......OO.O..OO$$$$$$$....
 ..O......OO.....O.O.OOOOO$$$$$$$....
 .........OO.OOO.O$$$$$$$$..
 ..O......OO.....O.O.OOOOO$$$$$$$....
 OO...OOO.OO......OO.O..OO$$$$$$$....
 O..O.OO.OO$$$$$$$$.........
 O..OOOOO.O$$$$$$$$.........
 .OO.O...OO.OO$$$$$$$$......
 $O$$$$$$$$........
 $.........OOOOO$$$$$$$.....
 $.........O....O...OO$$$$$$.........
 $.OOOOO...O.......OO.OOO$$$$$$......
 $.O....O...O...O...OOOOO$$$$$$......
 $.O$O......OOO$$$$$$.......
 $..O...O$$$$$$$$..
 $....O$$$$$$$$....
 $$$$$$$$$.........
 $$$$......OOOO$$$$.........
 $$$$......O...O$$$$........
 $$$$......O$$$$$..
 $$$$.......O..O$$$$........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.....OO..
 $$$$$$$$$...O....O
 $$$$$$$$$..O......
 $$$$$$$$$..O.....O
 $$$$$$$$$..OOOOOO.
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
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 $$$$$$$$$.........
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 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$$.........
 $$$$$$$$.......OO$
 $$$$$$$$.....O....O........
 $$$$$$$$....O$....
 $$$$$$$$....O.....O........
 $$$$$$$$....OOOOOO.........


      ,    .           6N     6N  .
    120N,    3N    .
    -   8,         ,   4 (mod 8).

,       ,    1164,   14 .

[  1164]
 $$$$$$$$$OOOOOO.........
 $$$$$$$$$O.....O........
 $$$$$$$$$O$....
 $$$$$$$$$.O....O........
 $$$$$$$$$...OO$
 $$$$$$$$$$.....
 $$$$$$$$$$.....
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 $.O....O...O...O...OOOOO$$$$$$$..
 $.OOOOO...O.......OO.OOO$$$$$$$..
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 $O$$$$$$$$$....
 .OO.O...OO.OO$$$$$$$$$..
 O..OOOOO.O$$$$$$$$$.....
 O..O.OO.OO$$$$$$$$$.....
 OO...OOO.OO......OO.O..OO$$$$$$$$
 ..O......OO.....O.O.OOOOO$$$$$$$$
 .........OO.OOO.O$$$$$$$$........
 ..O......OO.....O.O.OOOOO$$$$$$$$
 OO...OOO.OO......OO.O..OO$$$$$$$$
 O..O.OO.OO$$$$$$$$$.....
 O..OOOOO.O$$$$$$$$$.....
 .OO.O...OO.OO$$$$$$$$$..
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 $.........OOOOO$$$$$$$$.
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 $$$$$$$$$.........O....O
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 $$$$$$$$$$.....
 $$$$$$$$$$.....
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 $$$$$$$$$.O....O........
 $$$$$$$$$O$....
 $$$$$$$$$O.....O........
 $$$$$$$$$OOOOOO.........


       ,     ,        .    .       ,    ,  .

[     ]
 ........OO.....$$$$$$.......
 .......OO.OOO..$$$$$$.......
 ........OOOOO..$$$$$$.......
 .........OOO...$$$$$$.......
 ...............$$$$$$.......
 ...............$$$$$$.......
 ...............$$$$$$...OOO.
 ...............$$$$$$..OOOOO
 ...............$$$$$$.OO.OOO
 ......O........$$$$$$..OO...
 ....OO.........$$$$$$.......
 .....OO........$$$$$$.......
 ...............$$$$$$.......
 ...OO..........$$$$$$.......
 .O....O........$$$$$$.......
 O..............$$$$$$.......
 O.....O........$$$$$$.......
 OOOOOO.........$$$$$$.......


          ,    ,    4 (mod 8).
      1044      ()   .      1732.   16    .

[  1732]
 $$$$$$$$$$$$$$$........OOOOOO.........
 $$$$$$$$$$$$$$$........O.....O........
 $$$$$$$$$$$$$$$........O$....
 $$$$$$$$$$$$$$$.........O$...
 $$$$$$$$$$$$$$$$$...
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 $$$$$$$$$$$$$$$$$...
 $$$$$$$$..O$$$$$$$$$
 $$$$$$$$.O$$$$$$$$$.
 $$$$$$$$.O.....O$$$$$$$$.....
 $$$$$$$$.OOOOOO$$$$$$$$......
 $$$$$$$$$$$$$$$$$...
 $$$$$$$$$$$$$$$$......OOOOOO.
 $$$$$$$$$$$$$$$$......O.....O
 $$$$$$$$$$$$$$$$......O......
 $$$$$$$$$$$$$$$$.......O.....
 $$$$$$$$$$$$$$$$$...
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 $$$$$$$$.........OO$$$$$$$$..
 $$$$$$$$........OO.OOO$$$$$$$.........
 $$$$$$$$.........OOOOO$$$$$$$.........
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 $$$$$$$$$$$$$$$$$...
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 $$$$......O...O$$$$$$$$$$$$..
 $$$$......O$$$$$$$$$$$$......
 $$$$.......O$$$$$$$$$$$$.....
 $$$$$$$$$$$$$$$$$...
 $$$$$$$$$$$$$$$$$...
 $.OOOOO$$$$$$$$$$$$$$$.......
 $.O....O$.OO$$$$$$$$$$$$$$...
 $.O.......OOOOO...OO.OOO$$$$$$$$$$$$$$
 $..O......O....O...OOOOO$$$$$$$$$$$$$$
 $.OOOO....O.........OOO$$$$$$$$$$$$$$.
 ........O.O.O.......O$$$$$$$$$$$$$$$..
 ..O.....OOO.O$$$$$$$$$$$$$$$$
 OO......OO$$$$$$$$$$$$$$$$...
 O..OOO$....O$$$$$$$$$$$$$$$..
 O....OOO.........O.O.O.O.OO$$$$$$$$$$$$$$......
 .OOO..OOO.......OOOO...OOOO$$$$$$$$$$$$$$......
 ........O..OOO.O$$$$$$$$$$$$$$$.......
 .OOO..OOO.......OOOO...OOOO$$$$$$$$$$$$$$......
 O....OOO.........O.O.O.O.OO$$$$$$$$$$$$$$......
 O..OOO$....O$$$$$$$$$$$$$$$..
 OO......OO$$$$$$$$$$$$$$$$...
 ..O.....OOO.O$$$$$$$$$$$$$$$$
 ........O.O.O.......O$$$$$$$$$$$$$$$..
 $.OOOO....O.........OOO$$$$$$$$$$$$$$.
 $..O......O....O...OOOOO$$$$$$$$$$$$$$
 $.O.......OOOOO...OO.OOO$$$$$$$$$$$$$$
 $.O....O$.OO$$$$$$$$$$$$$$...
 $.OOOOO$$$$$$$$$$$$$$$.......
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 $$$$$$$$$$$$$$$$$...
 $$$$.......O$$$$$$$$$$$$.....
 $$$$......O$$$$$$$$$$$$......
 $$$$......O...O$$$$$$$$$$$$..
 $$$$......OOOO$$$$$$$$$$$$...
 $$$$$$$$$$$$$$$$$...
 $$$$$$$$$$$$$$$$$...
 $$$$$$$$$OOO$$$$$$$$
 $$$$$$$$.........OOOOO$$$$$$$.........
 $$$$$$$$........OO.OOO$$$$$$$.........
 $$$$$$$$.........OO$$$$$$$$..
 $$$$$$$$$$$$$$$$$...
 $$$$$$$$$$$$$$$$$...
 $$$$$$$$$$$$$$$$$...
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 $$$$$$$$$$$$$$$$.......O.....
 $$$$$$$$$$$$$$$$......O......
 $$$$$$$$$$$$$$$$......O.....O
 $$$$$$$$$$$$$$$$......OOOOOO.
 $$$$$$$$$$$$$$$$$...
 $$$$$$$$.OOOOOO$$$$$$$$......
 $$$$$$$$.O.....O$$$$$$$$.....
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 $$$$$$$$$$$$$$$$$...
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 $$$$$$$$$$$$$$$.........O$...
 $$$$$$$$$$$$$$$........O$....
 $$$$$$$$$$$$$$$........O.....O........
 $$$$$$$$$$$$$$$........OOOOOO.........


        688.
  688 -   8,   688  120  8,         ( 14)      120,  ,          ,    4 (mod 8).

 ,  ,           ,     4.      ,  4,       ,                 .

 ,   -     ,      . , ,   ,  (  )       ,      .  ,      ,           .            .       ,    ,                  .

      ,  -    ,      .      .      ,   ",    ,     ",   -  .   - ,      ,           .      ,   "",    ,     - ,     ,    .     ,  "".

       -   .       ,        .    ,   , ,    .
  "" 156.   ,      .

["  ",    ]
 ...........O..O...............
 ..........O...................
 ..........O...O...............
 ..OO......OOOO................
 .OOOO.........................
 OO.OO.........................
 .OO.....OO.OOO................
 .......O.....OO.......O....OOO
 ......OO.......O......O....O.O
 .......O.....OO.......O....OOO
 .OO.....OO.OOO................
 OO.OO.........................
 .OOOO.........................
 ..OO......OOOO................
 ..........O...O...............
 ..........O...................
 ...........O..O...............


       ,  "" 72.
     . ,       ,   .   ,       ,     .   ""  14  .

["    ",    ]
 .O....................
 O.....................
 O....O................
 OOOOO.................
 ......................
 ......................
 ......................
 .OO...................
 OO.OOO.O..............
 .OOOOOOO..OOO.OOO.OOO.
 ..OOOOO...............
 ......................
 .....OO.............O.
 ...O...............OO.
 ..O.........O......O.O
 ..O.....O..O..........
 ..OOOOOO...O.....O....
 ...........OOOOOO.....
 ......................
 ......................
 ......................
 ......................
 ..........OO..OO......
 .........OO.OO.O......
 ..........OOOOO.......
 ...........OOO........
 ............O.........
 ..........O...O.......
 .........O............
 .........O....O.......
 .........OOOOO........


  - " ",  .  -   ,    -- -  .
      .    -  1 -. -        ,     30   3c/10.         ,    .   "" 180.

["    ",   ]  $$.....OOOO$$$$$$$$........
 $$....OOOOOO$$$$$$$$.......
 $$...OO.OOOO$.......OOOOOO$$$$$$....
 $$....OO$$.O.....O$$$$$$...
 $$$$.......O$$$$$$.........
 $.....O$$$..O....O$$$$$$...
 $...O...O$$$..OO$$$$$$.....
 $..O$.........OO$$$$$$$$...
 $..O....O........OO...OOO$$$$$$$$...
 $..OOOOO........O..OOO...OO$$$$$$$$.
 $$.....O.O.......OO.....OO$$$$$$$...
 $$......O...O.....OO....O.O$$$$$$$..
 OOOO$$.......O....O......O.O$$$$$$$.
 O...O.........O$$O........O$$$$$$........OO..
 O$.OO$$$$$$$$$........OO.OO
 .O..O..OO.....OOO$$$$$$$$$......OOOO
 ......OOO......OOO$$$$$$$$$......OO.
 .O..O..OO.....OOO$.O$$$$$$$$........
 O$.OO$$$$$$$$$$...
 O...O.........O$$$$$$$$$$..
 OOOO$........O.O$$$.........OOO$$$$$
 $$$......OO$$......O.O$$$$$
 $$$.....OO.OOO$.........O...OO$$$$$.
 $...OO$$.OOOOO$.......O...O$$$$$....
 $..OO.OO$$OOO......O$O$$$$$.........
 $...OOOO$$.......O...O........O....O$$$$$....
 $....OO$$.......O$...OOOOO$$$$$.....
 $$$$...O....O$$$$$$........
 $$$$...OOOOO$$$$$$.........
 $$$$$$$$$$$.......
 $$$$$$$$$$$.......
 $$$.OOOO$$$$$$$$..
 $$$.O...O$O$$$$$$$
 $$$.O.......OO....O.O$$$$$$.........
 $$$..O..O..OOOO...O..OO........OO$......OO$$$.........
 $$$.......OO...O.....O.OO......OO$......OO$$$.........
 $$$..O..O..OOOO...O..OO$$$$$$.......
 $$$.O.......OO....O.O$$$$$$.........
 $$$.O...O$O$$$$$$$
 $$$.OOOO$$$$$$$$..
 $$$$$$$$$$$.......
 $$$$$$$$$$$.......
 $$$$....OOOOO$$$$$$........
 $$$$....O....O$$$$$$.......
 $$$$....O$$$.O$$$$
 $$$$.....O...O$$.....OO$$$$
 $$$$$$$....O$$$$..
 $$$$.....O...O$$.....OO$$$$
 $$$$....O$$$.O$$$$
 $$$$....O....O$$$$$$.......
 $$$$....OOOOO$$$$$$........
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 $$$.O.......OO....O.O$$$$$$.........
 $$$..O..O..OOOO...O..OO$$$$$$.......
 $$$.......OO...O.....O.OO......OO$......OO$$$.........
 $$$..O..O..OOOO...O..OO........OO$......OO$$$.........
 $$$.O.......OO....O.O$$$$$$.........
 $$$.O...O$O$$$$$$$
 $$$.OOOO$$$$$$$$..
 $$$$$$$$$$$.......
 $$$$$$$$$$$.......
 $$$$...OOOOO$$$$$$.........
 $$$$...O....O$$$$$$........
 $....OO$$.......O$...OOOOO$$$$$.....
 $...OOOO$$.......O...O........O....O$$$$$....
 $..OO.OO$$OOO......O$O$$$$$.........
 $...OO$$.OOOOO$.......O...O$$$$$....
 $$$.....OO.OOO$.........O...OO$$$$$.
 $$$......OO$$......O.O$$$$$
 OOOO$........O.O$$$.........OOO$$$$$
 O...O.........O$$$$$$$$$$..
 O$.OO$$$$$$$$$$...
 .O..O..OO.....OOO$.O$$$$$$$$........
 ......OOO......OOO$$$$$$$$$......OO.
 .O..O..OO.....OOO$$$$$$$$$......OOOO
 O$.OO$$$$$$$$$........OO.OO
 O...O.........O$$O........O$$$$$$........OO..
 OOOO$$.......O....O......O.O$$$$$$$.
 $$......O...O.....OO....O.O$$$$$$$..
 $$.....O.O.......OO.....OO$$$$$$$...
 $..OOOOO........O..OOO...OO$$$$$$$$.
 $..O....O........OO...OOO$$$$$$$$...
 $..O$.........OO$$$$$$$$...
 $...O...O$$$..OO$$$$$$.....
 $.....O$$$..O....O$$$$$$...
 $$$$.......O$$$$$$.........
 $$....OO$$.O.....O$$$$$$...
 $$...OO.OOOO$.......OOOOOO$$$$$$....
 $$....OOOOOO$$$$$$$$.......
 $$.....OOOO$$$$$$$$........


         .             ,   ,   .   -  ,  ,  ,  ,   .                ,    ,       .

  ,                .  ,       .

 . 

