View Compilation Error

0_0_37532217_21591.cpp:95:2: error: 'rt' does not name a type
  rt = root << 1;
  ^
0_0_37532217_21591.cpp:96:2: error: 'mid' does not name a type
  mid = (left + right) >> 1;
  ^
0_0_37532217_21591.cpp:100:2: error: expected unqualified-id before 'if'
  if(qleft <= mid)
  ^
0_0_37532217_21591.cpp:104:2: error: expected unqualified-id before 'if'
  if(mid < qright)
  ^
0_0_37532217_21591.cpp:109:2: error: expected unqualified-id before 'return'
  return ans;
  ^
0_0_37532217_21591.cpp:111:1: error: expected declaration before '}' token
 }
 ^