N = 15;
M = 15;
R = 8;
C = 7;
a = [|834,410,156,73,410,689,873,371,702,692,411,485,566,218,716,
     |741,409,459,618,254,803,749,845,319,758,957,119,360,237,485,
     |71,428,541,960,878,710,509,918,110,69,592,580,1000,193,584,
     |291,237,595,101,349,431,192,718,443,721,703,863,850,444,211,
     |148,295,971,906,84,601,65,655,18,214,794,413,984,33,447,
     |885,493,226,334,794,865,334,954,347,110,944,454,977,602,696,
     |24,497,386,371,100,948,904,436,757,677,520,946,12,939,536,
     |577,522,72,38,445,536,248,463,92,409,6,844,84,206,852,
     |31,678,963,866,591,681,744,25,81,185,827,816,928,945,227,
     |534,238,822,128,73,523,230,817,455,292,82,854,195,576,392,
     |352,162,384,60,429,774,197,655,104,426,334,808,745,312,105,
     |435,961,672,794,687,465,177,507,861,603,565,163,69,176,904,
     |449,323,484,321,298,882,191,108,890,887,829,863,327,114,352,
     |676,244,337,877,15,13,101,100,408,574,8,300,547,289,367,
     |863,398,168,725,873,402,287,801,311,30,918,129,550,864,830|];