Compilare: user.cpp: In function ‘int main()’: user.cpp:25:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<Lista[i].size();j++) ^ user.cpp:29:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<Lista[i].size();j++) ^ user.cpp:36:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<Lista[j].size();i++) ^ user.cpp:41:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<Lista[j].size();i++) ^ user.cpp:43:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<Lista[r].size();i++) ^