View Compilation Error

0_0_17400253_2529.cpp: In function 'void PushUp(int)':
0_0_17400253_2529.cpp:41:24: error: expected primary-expression at end of input
  st[id].key = max(st[id%
                        ^
0_0_17400253_2529.cpp:41:24: error: expected ']' at end of input
0_0_17400253_2529.cpp:41:24: error: expected '}' at end of input