View Compilation Error

0_0_33447389_1614.cpp: In function 'bool cmp(node, node)':
0_0_33447389_1614.cpp:11:5: error: 'x' was not declared in this scope
  if(x.cnt!=y.cnt)
     ^
0_0_33447389_1614.cpp:11:12: error: 'y' was not declared in this scope
  if(x.cnt!=y.cnt)
            ^