Compilare: user.cpp: In function ‘int maxx(int)’: user.cpp:11:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[i].size();j++) ^ user.cpp:12:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[v[i][j].first].size()>maxim&&viz2[j]==0) {maxim=v[v[i][j].first].size(); nr2=j;} ^ user.cpp: In function ‘void df(int)’: user.cpp:30:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[i].size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:59:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[i].size();j++) ^ user.cpp:61:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(v[i].size()>=k) ^ user.cpp:97:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[i].size();j++) ^