8 2 4 2 4 5 100 2 100
2 3 4 2 5 1 100 2
40%的数据满足:1<= n <=1000 80%的数据满足:1<= n <=50000 100%的数据满足:1<= n <=200000,每个数均不超过 1 500 000 000(1.5*109)
NOIP2007提高组01、排序