View Compilation Error

0_0_20674488_16221.cpp: In function 'int Dinic()':
0_0_20674488_16221.cpp:81:30: error: 'xi' was not declared in this scope
             if(i->c>0 && dep[xi->in!=-1)
                              ^
0_0_20674488_16221.cpp:81:40: error: expected ']' before ')' token
             if(i->c>0 && dep[xi->in!=-1)
                                        ^