Maple

A grade

{ 1, 3, 4, 10, 11, 12, 20, 21, 22, 23, 25, 27, 30, 32, 33, 34, 35 }

B grade

{ 2, 17, 19, 24, 26 }

C grade

{ 5, 6, 7, 8, 13, 14 }

F normal fail

{ 9, 15, 16, 18, 28, 29, 31 }

F(-1) timedout fail

{ }

F(-2) exception fail

{ }