intmat A[9][9]=
0,0,0,0,0,6,1,0,0,
0,0,0,0,9,1,6,0,8,
7,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,2,
3,7,0,0,0,0,0,0,0,
0,0,0,0,0,4,0,0,6,
0,0,0,7,3,0,0,0,0,
0,8,1,0,0,0,0,0,0,
0,0,0,5,0,0,0,0,0;