2.1.6 Giac

A grade

{ 4, 6, 7, 8, 22 }

B grade

{ 1, 2, 3, 5, 11, 13, 14, 15, 16, 17, 18, 23, 24 }

C grade

{ 19, 20, 21 }

F normal fail

{ 27 }

F(-1) timedout fail

{ }

F(-2) exception fail

{ 9, 10, 12, 25, 26 }