Compilare: user.cpp: In function ‘std::vector<std::pair<int, int> > remove_inc(std::vector<std::pair<int, int> >)’: user.cpp:21:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < weap.size(); i++) { ^ user.cpp:30:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < weap.size(); i++) ^ user.cpp: In function ‘std::vector<std::pair<int, int> > remove_red(std::vector<std::pair<int, int> >)’: user.cpp:45:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < weap.size(); i++) { ^ user.cpp: In function ‘std::vector<int> get_left(std::vector<std::pair<int, int> >&, int)’: user.cpp:58:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p < weap.size() && weap[p].second < i) ^ user.cpp:61:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p + 1 < weap.size() && ^ user.cpp:65:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p < weap.size() && weap[p].first <= i && i <= weap[p].second) ^ user.cpp: In function ‘std::vector<int> get_right(std::vector<std::pair<int, int> >&, int)’: user.cpp:76:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(p < weap.size() && weap[p].second < i) ^ user.cpp:79:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(p < weap.size() && weap[p].first <= i && i <= weap[p].second) ^ user.cpp: In function ‘void printv(std::vector<std::pair<int, int> >)’: user.cpp:87:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < weap.size(); i++) ^ user.cpp: In function ‘void printv(std::vector<int>)’: user.cpp:93:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < weap.size(); i++) ^