View Compilation Error

0_0_30903711_1887.cpp: In function 'int Find(int, int*, int*)':
0_0_30903711_1887.cpp:12:28: error: too few arguments to function 'int Find(int, int*, int*)'
         int t = Find(pre[x]);
                            ^
0_0_30903711_1887.cpp:6:5: note: declared here
 int Find(int x, int *pre, int *under)
     ^