0_0_15262718_17969.cpp: In function 'void dfs(int)': 0_0_15262718_17969.cpp:22:10: error: 'class std::vector<int>' has no member named 'push_ba' vec[nn].push_ba ^ 0_0_15262718_17969.cpp:22:10: error: expected '}' at end of input