Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:31:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[x].size();i++) ^ user.cpp: In function ‘void Solve()’: user.cpp:83:10: warning: unused variable ‘j’ [-Wunused-variable] { int i,j,x,zi,nod,tip,m,t,ind; ^ user.cpp: In function ‘int main()’: user.cpp:122:9: warning: unused variable ‘j’ [-Wunused-variable] { int i,j,x; ^