Compilare: user.cpp: In function ‘int main()’: user.cpp:2:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define for0(i, n) for(int i = 0; i < n; i++) ^ user.cpp:81:9: note: in expansion of macro ‘for0’ for0(j, prime.size()) if((i >> j) & 1) temp.pb(prime[j]); ^ user.cpp:47:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numerologie.in", "r", stdin); ^ user.cpp:48:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numerologie.out", "w", stdout); ^