Compilare: user.cpp: In function ‘int main()’: user.cpp:63:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<v[i].size(); j++) ^ user.cpp:66:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<comp.size(); i++) ^ user.cpp:67:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<comp.size(); j++) ^ user.cpp:70:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<comp.size(); i++) { ^ user.cpp:99:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<intzero.size(); i++) added.push_back(make_pair(comp[comp.size()-1][0], comp[intzero[i]][0])); ^ user.cpp:100:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<extzero.size(); i++) added.push_back(make_pair(comp[extzero[i]][0], comp[0][0])); ^ user.cpp:104:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<added.size(); i++) ^