Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:15:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[knot].size(); i ++) { ^ user.cpp: In function ‘int main()’: user.cpp:54:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < componente[i].size(); j ++) { ^