Compilare: user.cpp: In function ‘int main()’: user.cpp:39:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<dr[i].size(); j++) ^ user.cpp:46:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(p=0; p<ml[t].size(); p++) ^ user.cpp:53:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(nr==ml[t].size() && ml[t].size()>maxim) ^ user.cpp:53:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(nr==ml[t].size() && ml[t].size()>maxim) ^ user.cpp:72:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(ml[t].size()>maxx) ^