Maxima

A grade

{ 6, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 53, 54, 55, 56, 57, 58, 59, 60, 64, 65, 66, 70, 71, 72, 75, 76, 77 }

B grade

{ 5, 7, 9, 51, 52, 61, 62, 63, 67, 68, 69, 73, 74, 78 }

C grade

{ }

F normal fail

{ 79, 80, 81, 82, 84, 85, 86, 87 }

F(-1) timedout fail

{ }

F(-2) exception fail

{ 1, 2, 3, 4 }