View Compilation Error

0_0_17400263_8247.cpp: In function 'void PushUp(int)':
0_0_17400263_8247.cpp:36:5: error: 'st' was not declared in this scope
  if(st[id<<1|1].key > st[id<<1].key)
     ^
0_0_17400263_8247.cpp:39:2: error: 'st' was not declared in this scope
  st[id].key = max(st[id<<1].key,st[id<<1|1].key%
  ^
0_0_17400263_8247.cpp:39:48: error: expected primary-expression at end of input
  st[id].key = max(st[id<<1].key,st[id<<1|1].key%
                                                ^
0_0_17400263_8247.cpp:39:48: error: expected '}' at end of input