Compilare: main.cpp: In function 'void DFS(long long int)': main.cpp:33:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<v[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp:45:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[nod].size(); j++) // pentru fiecare vecin ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:85:19: warning: statement has no effect [-Wunused-value] niv[iepure_sef]; ~~~~~~~~~~~~~~^