/in/foo.cc: In function 'int main()':
/in/foo.cc:20:21: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
 scanf("%d%d", &n, &k);
                     ^
/in/foo.cc:20:21: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
/in/foo.cc:23:21: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
 scanf("%d", &m[i][j]);
                     ^