Compilare: user.cpp: In function ‘int main()’: user.cpp:36:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= p; ++ i) { ^ user.cpp:24:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("frumoasa.in", "r", stdin); ^ user.cpp:25:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("frumoasa.out", "w", stdout); ^ user.cpp:28:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llu%llu", &n, &p); ^