Compilare: user.cpp: In function ‘void solve()’: user.cpp:47:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:50:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &M[i][j]); ^ user.cpp: In function ‘int main()’: user.cpp:97:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(FILENAME ".in", "r", stdin); ^ user.cpp:98:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(FILENAME ".out", "w", stdout); ^ user.cpp: In function ‘void solve()’: user.cpp:52:26: warning: array subscript is above array bounds [-Warray-bounds] A[i][j][k] = INF; ^ user.cpp:52:26: warning: array subscript is above array bounds [-Warray-bounds]