Compilare: user.cpp: In function ‘void dfs(int, int, int)’: user.cpp:13:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] { if (vz[x] == g[x].size() + 1) ^ user.cpp: In function ‘int main()’: user.cpp:43:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] { for (int j = 0; j < g[i].size(); ++j) ^ user.cpp:46:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int k = 0; k < g[vec].size(); ++k) ^