Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:41:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g[dad].size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:84:44: warning: ‘win_y’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << smax << " " << win_x << " " << win_y << "\n"; ^ user.cpp:84:28: warning: ‘win_x’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << smax << " " << win_x << " " << win_y << "\n"; ^