Compilare: user.cpp: In function ‘void make_interval()’: user.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<rata.size();i++) ^ user.cpp:19:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<zid.size()-1;j++) ^ user.cpp:35:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==zid.size()-2) ^ user.cpp:37:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(zid[j+1].first>=rata[i].first && j<zid.size()-2) ^ user.cpp:58:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<interval.size();i++) ^ user.cpp:62:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i+1<interval.size() && interval[i+1].second==pos) ^