View Compilation Error

0_0_31498531_4784.cpp: In instantiation of 'hlpp_t<Flow>::max_flow(int, int)::<lambda()> [with Flow = int]':
0_0_31498531_4784.cpp:62:25:   required from 'struct hlpp_t<Flow>::max_flow(int, int) [with Flow = int]::<lambda()>'
0_0_31498531_4784.cpp:67:9:   required from 'Flow hlpp_t<Flow>::max_flow(int, int) [with Flow = int]'
0_0_31498531_4784.cpp:150:27:   required from here
0_0_31498531_4784.cpp:52:26: error: converting to 'std::stack<int>' from initializer list would use explicit constructor 'std::stack<_Tp, _Sequence>::stack(_Sequence&&) [with _Tp = int; _Sequence = std::deque<int, std::allocator<int> >]'
                 order[i] = {};
                          ^
0_0_31498531_4784.cpp: In instantiation of 'Flow hlpp_t<Flow>::max_flow(int, int) [with Flow = int]':
0_0_31498531_4784.cpp:150:27:   required from here
0_0_31498531_4784.cpp:98:28: error: invalid use of 'auto'
                 discharge(u);
                            ^