Compilare: user.cpp: In function ‘int main()’: user.cpp:30:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (ans[n][m] < 0 || ans[n][m] >= p) ^ user.cpp:31:28: warning: division by zero [-Wdiv-by-zero] printf("%d", 1 / 0); ^ user.cpp:6:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("basket.in", "r", stdin); ^ user.cpp:7:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("basket.out", "w", stdout); ^ user.cpp:9:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &t, &p); ^ user.cpp:29:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^