Choose Two Numbers

题面翻译

设有两个正整数数列$A$和$B$，长度分别为$n$和$m$。试从两个数列中各找一个元素，使得这两个元素的和均不出现在原来的两个数列中。

可以证明有解。输出任意一组解即可。

保证$1\leq n,m\leq 100$，数列元素均在$(0,200]$间。

题目描述

You are given an array $A$ , consisting of $n$ positive integers $a_1, a_2, \dots, a_n$ , and an array $B$ , consisting of $m$ positive integers $b_1, b_2, \dots, b_m$ .

Choose some element $a$ of $A$ and some element $b$ of $B$ such that $a+b$ doesn't belong to $A$ and doesn't belong to $B$ .

For example, if $A = [2, 1, 7]$ and $B = [1, 3, 4]$ , we can choose $1$ from $A$ and $4$ from $B$ , as number $5 = 1 + 4$ doesn't belong to $A$ and doesn't belong to $B$ . However, we can't choose $2$ from $A$ and $1$ from $B$ , as $3 = 2 + 1$ belongs to $B$ .

It can be shown that such a pair exists. If there are multiple answers, print any.

Choose and print any such two numbers.

输入格式

The first line contains one integer $n$ ( $1\le n \le 100$ ) — the number of elements of $A$ .

The second line contains $n$ integers $a_1, a_2, \dots, a_n$ ( $1 \le a_i \le 200$ ) — the elements of $A$ .

The third line contains one integer $m$ ( $1\le m \le 100$ ) — the number of elements of $B$ .

The fourth line contains $m$ different integers $b_1, b_2, \dots, b_m$ ( $1 \le b_i \le 200$ ) — the elements of $B$ .

It can be shown that the answer always exists.

输出格式

Output two numbers $a$ and $b$ such that $a$ belongs to $A$ , $b$ belongs to $B$ , but $a+b$ doesn't belong to nor $A$ neither $B$ .

If there are multiple answers, print any.

样例 #1

样例输入 #1

1
20
2
10 20

样例输出 #1

20 20

样例 #2

样例输入 #2

3
3 2 2
5
1 5 7 7 9

样例输出 #2

3 1

样例 #3

样例输入 #3

4
1 3 5 7
4
7 5 3 1

样例输出 #3

1 1

提示

In the first example, we can choose $20$ from array $[20]$ and $20$ from array $[10, 20]$ . Number $40 = 20 + 20$ doesn't belong to any of those arrays. However, it is possible to choose $10$ from the second array too.

In the second example, we can choose $3$ from array $[3, 2, 2]$ and $1$ from array $[1, 5, 7, 7, 9]$ . Number $4 = 3 + 1$ doesn't belong to any of those arrays.

In the third example, we can choose $1$ from array $[1, 3, 5, 7]$ and $1$ from array $[7, 5, 3, 1]$ . Number $2 = 1 + 1$ doesn't belong to any of those arrays.