1.000s
128MB
第一行一个数n 第二行n个数表示序列a 备注: 1 <= n <= 100000 0 <= ai <= 10
1 <= n <= 100000 0 <= ai <= 10
1 <= n <= 100000
0 <= ai <= 10
输出一个数表示答案
6 0 1 0 9 1 0
11