View Compilation Error

0_0_20141990_1950.cpp: In member function 'int nodee::getlr()':
0_0_20141990_1950.cpp:10:10: error: 'node' was not declared in this scope
   return node[fa].son[1] == now;
          ^
0_0_20141990_1950.cpp: In member function 'int nodee::link(int, int)':
0_0_20141990_1950.cpp:13:15: error: 'node' was not declared in this scope
   son[d] = c; node[c].fa = now; return now;
               ^
0_0_20141990_1950.cpp: In member function 'void nodee::update()':
0_0_20141990_1950.cpp:17:14: error: 'node' was not declared in this scope
   maxx = max(node[son[0]].weight, node[son[1]].weight);
              ^
0_0_20141990_1950.cpp: In member function 'void nodee::pushdown()':
0_0_20141990_1950.cpp:24:4: error: 'node' was not declared in this scope
    node[son[0]].rev ^= 1; node[son[1]].rev ^= 1;
    ^
0_0_20141990_1950.cpp:28:4: error: 'node' was not declared in this scope
    node[son[0]].delta += delta; node[son[1]].delta += delta;
    ^