Mma

A grade

{ 1, 3, 4, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 26, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 40, 41, 46, 47, 53, 54, 55, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 69, 71, 73, 74, 77, 78, 79 }

B grade

{ 2, 39, 45 }

C grade

{ 5, 6, 7, 18, 25, 27, 28, 42, 43, 44, 49, 56, 64, 68, 72, 75, 76 }

F normal fail

{ 48, 52, 70 }

F(-1) timedout fail

{ }

F(-2) exception fail

{ }