Compilare: user.cpp: In function ‘int main()’: user.cpp:70:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i < q.size();i++) { ^ user.cpp:76:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0;j < q.size();j++) { ^ user.cpp:36:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.in", "r", stdin); ^ user.cpp:37:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ferma3.out", "w", stdout); ^ user.cpp:91:30: warning: ‘bsy’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << bsx << " " << bsy; ^ user.cpp:91:13: warning: ‘bsx’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout << bsx << " " << bsy; ^