Compilare: user.cpp: In function ‘void Sort(int, int)’: user.cpp:25:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[x].size();++i) if(!viz[v[x][i]]) Sort(v[x][i],x); ^ user.cpp: In function ‘int main()’: user.cpp:49:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[crt].size();++j) if(tata[v[crt][j]] == crt && !cuplaj[v[crt][j]]) ^