Giac

A grade

{ 15, 27, 68 }

B grade

{ 5, 12, 20, 53, 58, 63 }

C grade

{ }

F normal fail

{ 1, 3, 8, 10, 16, 18, 23, 25, 31, 32, 33, 36, 37, 38, 41, 42, 43, 46, 47, 48, 51, 52, 56, 57, 61, 62, 66, 67, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83 }

F(-1) timedout fail

{ }

F(-2) exception fail

{ }