View Compilation Error

0_0_33522900_27936.cpp: In function 'int main()':
0_0_33522900_27936.cpp:58:38: error: 'std::map<int, std::map<int, int> >::mapped_type' has no member named 'en'
                     if (it == vis[e].en
                                      ^
0_0_33522900_27936.cpp:58:38: error: expected ')' at end of input
0_0_33522900_27936.cpp:58:38: error: expected statement at end of input
0_0_33522900_27936.cpp:58:38: error: expected '}' at end of input
0_0_33522900_27936.cpp:58:38: error: expected '}' at end of input
0_0_33522900_27936.cpp:58:38: error: expected '}' at end of input
0_0_33522900_27936.cpp:58:38: error: expected '}' at end of input
0_0_33522900_27936.cpp:58:38: error: expected '}' at end of input