View Compilation Error

0_0_21338308_26662.cpp: In function 'int query(int, int, int, int, int)':
0_0_21338308_26662.cpp:77:48: error: expected ')' at end of input
   return mergeTree(query(x*2,l,mid,left,right),query
                                                ^
0_0_21338308_26662.cpp:77:48: error: expected ';' at end of input
0_0_21338308_26662.cpp:77:48: error: expected '}' at end of input
0_0_21338308_26662.cpp:77:48: error: expected '}' at end of input