View Compilation Error

0_0_21030717_9739.cpp: In function 'int find(int)':
0_0_21030717_9739.cpp:6:14: error: expected ']' before ')' token
     if(f[i!=i)
              ^
0_0_21030717_9739.cpp:8:12: error: 'father' was not declared in this scope
     return father[i];
            ^