Giac

A grade

{ 11, 16, 17, 18, 19 }

B grade

{ 21, 23 }

C grade

{ }

F normal fail

{ 2, 8, 10 }

F(-1) timedout fail

{ }

F(-2) exception fail

{ 1, 3, 4, 5, 6, 7, 9, 12, 13, 14, 15, 20, 22 }