View Compilation Error

0_0_34193781_17897.cpp:8:22: error: expected type-specifier before '(' token
  friend bool operator(Node a,Node b){
                      ^
0_0_34193781_17897.cpp:34:1: error: expected '}' at end of input
 }
 ^
0_0_34193781_17897.cpp:34:1: error: expected unqualified-id at end of input