View Compilation Error

0_0_17455906_31554.cpp: In function 'int find(int)':
0_0_17455906_31554.cpp:27:5: error: 'fx' was not declared in this scope
  if(fx!=x)
     ^
0_0_17455906_31554.cpp:29:7: error: redeclaration of 'int fx'
   int fx=fa[x];
       ^
0_0_17455906_31554.cpp:27:5: note: '<typeprefixerror>fx' previously declared here
  if(fx!=x)
     ^