rank userid   mark
     1  akashkum  100
     1  chenting  100
     1  isc07211  100
     1  jonathan  100
     1  kohchung  100
     1  lohyeong  100
     1  phanthix  100
     1  trantuan  100
     1  trianaku  100
     1  wangying  100
     1  zhangxin  100
     1  zhoujing  100
     1  zhuwenbi  100
     1  zhuyi     100
    15  johansya    0
    15  ouyongji    0