高分请教

Question

f1       f2       f31 11 8
1 22 6
2 22 9
2 33 5
2 22 9
2 66 1
3        55       6
3        44       8Ç뿼ÂÇÉϱí,ÎÒÈçºÎµÃµ½µÚÒ»ÐÐ,µÚÈýÐк͵ÚÆßÐÐ(f1ÖÐÓм¸¸ö²»Í¬Öµ¾ÍÒªµÃµ½¼¸ÐÐ,µ«¶¼È¡µÚÒ»ÐÐ)