Compilare: user.cpp: In function ‘int main()’: user.cpp:85:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ans<bumd[i].size()) ans = bumd[i].size(); ^ user.cpp:86:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int st = 0; st < bums[i].size(); st++) ^ user.cpp:88:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(dr<bumd[i].size() and bums[i][st].second<bumd[i][dr].first) ^ user.cpp:90:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(st+1 + bumd[i].size() - dr>ans){ ^