2.1.2 Mma

A grade

{ 1, 2, 3, 4, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18 }

B grade

{ 5, 17, 19 }

C grade

{ 11, 13 }

F normal fail

{ }

F(-1) timedout fail

{ }

F(-2) exception fail

{ }