Giac

A grade

{ 15, 16, 26, 27, 28, 29, 30, 31 }

B grade

{ }

C grade

{ }

F normal fail

{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17, 18, 19, 20, 21, 22, 23, 24, 25, 32, 33, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 }

F(-1) timedout fail

{ }

F(-2) exception fail

{ 34, 37 }