Mma

A grade

{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 25, 26, 27, 34, 35, 36, 39, 40, 41, 43, 44, 45, 47, 48, 49, 50, 51, 52, 54, 55, 56 }

B grade

{ }

C grade

{ 37, 38, 42, 46 }

F normal fail

{ 31 }

F(-1) timedout fail

{ }

F(-2) exception fail

{ }