Giac

A grade

{ 18, 27, 29, 30, 31, 32, 35, 36, 37, 38, 39 }

B grade

{ 12, 19, 28, 33, 34, 40, 41 }

C grade

{ 42 }

F normal fail

{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20, 21, 22, 23, 24, 25, 26, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75 }

F(-1) timedout fail

{ 43, 48 }

F(-2) exception fail

{ 13, 14, 15, 16, 17, 44, 45, 46, 47 }