Compilare: user.cpp: In function ‘int main()’: user.cpp:13:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("civilizatie.in", "r", stdin); ^ user.cpp:14:46: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("civilizatie.out", "w", stdout); ^ user.cpp:17:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d", &p1, &x1, &y1, &t1, &n); ^ user.cpp:26:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &x[i], &y[i]); ^ user.cpp:69:14: warning: ‘p’ may be used uninitialized in this function [-Wmaybe-uninitialized] t[p] = (1LL << 31) - 1; ~~~~~^~~~~~~~~~~~~~~~~