N = 14;
M = 13;
R = 9;
C = 8;
a = [|866,176,490,595,356,513,647,320,14,453,210,93,80,
     |535,951,816,963,202,991,700,245,38,341,254,605,29,
     |533,202,519,545,598,22,850,441,557,879,264,284,84,
     |803,670,301,883,279,366,247,590,778,25,466,902,553,
     |152,254,53,700,556,904,84,801,580,43,223,832,16,
     |521,100,63,44,754,111,599,383,468,522,14,964,372,
     |843,558,248,932,142,453,37,477,301,479,519,95,629,
     |730,398,879,171,432,603,351,39,882,286,948,240,898,
     |303,533,127,954,99,591,168,979,817,473,983,401,326,
     |700,679,469,438,962,209,523,484,476,595,254,508,508,
     |839,136,247,986,141,574,399,173,11,354,267,840,412,
     |83,36,136,311,995,409,99,707,72,377,811,639,853,
     |88,50,342,481,675,976,274,688,687,475,416,17,526,
     |783,798,232,4,310,424,893,97,306,560,901,184,945|];