View Compilation Error

0_0_14889873_3118.cpp:20:10: error: expected ';' at end of member declaration
     bool operat
          ^
0_0_14889873_3118.cpp:20:10: error: expected '}' at end of input
0_0_14889873_3118.cpp:19:35: error: expected unqualified-id at end of input
     node(int u, int w):u(u), w(w){}
                                   ^