Add Numbers

Two non-negative integers are represented as digit lists with the ones digit first; compute their sum and output it in the same reversed order. The input may contain high-order 0s; this site always removes extra high-order 0s from the result, and zero is output as a single 0.

输入格式

The input is the length n, n digits, the length m, and m digits, in that order. The original gave no numeric bounds; this site adds 1≤n,m≤100000, with each item in 0..9.

输出格式

Output the normalized reversed digits separated by spaces, without the length. Zero is output as a single 0.

样例 1

输入：

3
2 4 6
3
8 0 9

输出：

0 5 5 1

样例 2

输入：

1
9
1
1

输出：

0 1

样例 3

输入：

2
0 0
1
0

输出：

0

样例说明

The outputs of the three public examples are, in order: 0 5 5 1; 0 1; 0. Verified by independent enumeration or direct simulation.