View Compilation Error

0_0_22208414_19989.cpp: In function 'int bfs()':
0_0_22208414_19989.cpp:32:13: error: 'edi' was not declared in this scope
    int to=e[edi].to;
             ^
0_0_22208414_19989.cpp: In function 'int dfs(int, int)':
0_0_22208414_19989.cpp:50:32: error: 'tmp' was not declared in this scope
    int flow=dfs(to,min(f-ret,e[tmp].c));
                                ^