Compilare: main.cpp: In function 'int main()': main.cpp:60:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < primeDivisors.size(); ++i) ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:39:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pinex.in", "r", stdin); ^ main.cpp:40:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("pinex.out", "w", stdout); ^ main.cpp:45:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &M); ^ main.cpp:49:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld", &A, &B); ^