Compilare: user.cpp: In function ‘void radix(std::vector<int>&, std::vector<intrebare>&)’: user.cpp:57:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < qs.size(); ++i) ^ user.cpp:61:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < pun[i].size(); ++j) ^ user.cpp: In function ‘int main()’: user.cpp:99:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(poz < muchii.size() && muchii[poz].cost >= cost_cerut) ^ user.cpp:67:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("luff.in", "r", stdin); ^ user.cpp:68:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("luff.out", "w", stdout); ^