Compilare: main.cpp: In function 'void bfs(int)': main.cpp:10:114: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] void bfs(int nod){q.push(nod);c[nod]=0;viz[nod]=1;while(!q.empty()){int nodcurent=q.front();q.pop();for(int i=0;i<v[nodcurent].size();i++){if(viz[v[nodcurent][i]]==0){viz[v[nodcurent][i]]=1;c[v[nodcurent][i]]=c[nodcurent]+1;q.push(v[nodcurent][i]);last=v[nodcurent][i];diametru=c[v[nodcurent][i]];} ~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:14:9: warning: unused variable 'n' [-Wunused-variable] int n,m; ^