Compilare: user.cpp: In function ‘int main()’: user.cpp:58:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(pq.size() > k) pq.pop(); ~~~~~~~~~~^~~ user.cpp:42:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("segmente2.in", "r", stdin); freopen("segmente2.out", "w", stdout); ^ user.cpp:42:79: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("segmente2.in", "r", stdin); freopen("segmente2.out", "w", stdout); ^