View Compilation Error

0_0_17627649_22241.cpp: In function 'void move(int, int)':
0_0_17627649_22241.cpp:117:20: error: invalid conversion from 'Node*' to 'int' [-fpermissive]
  if(v(L) == query(o))
                    ^
0_0_17627649_22241.cpp:92:5: note: initializing argument 1 of 'int query(int)'
 int query(int a)
     ^