Compilare: main.cpp: In function 'void echilibreaza(int)': main.cpp:20:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(grupa[k].size() > b) { ~~~~~~~~~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:44:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<grupa[i].size(); j++) cout<<grupa[i][j]+1<<" "; ~^~~~~~~~~~~~~~~~