Maple

A grade

{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19, 20, 21, 22, 24, 25, 27, 28, 44, 50, 51, 52, 53, 54, 62, 63, 64, 65, 66, 67, 69, 70, 71 }

B grade

{ 55, 56, 57, 58 }

C grade

{ 16 }

F normal fail

{ 26, 41, 42, 43, 45, 46, 47, 48, 49, 68 }

F(-1) timedout fail

{ }

F(-2) exception fail

{ }