Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:59:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[nod].size(); i++) ^ user.cpp: In function ‘void solve()’: user.cpp:74:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Comp.size(); i++) { ^ user.cpp:82:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Comp.size(); i++) { ^ user.cpp:85:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < sol[i].size(); j++) ^