A. Creating Words

Felven2024-06-21 23:42

time limit per test

1 second

memory limit per test

256 megabytes

input

standard input

output

standard output

Matthew is given two strings a𝑎 and b𝑏, both of length 33. He thinks it's particularly funny to create two new words by swapping the first character of a𝑎 with the first character of b𝑏. He wants you to output a𝑎 and b𝑏 after the swap.

Note that the new words may not necessarily be different.

Input

The first line contains t𝑡 (1≤t≤1001≤𝑡≤100) --- the number of test cases.

The first and only line of each test case contains two space-separated strings, a𝑎 and b𝑏, both of length 33. The strings only contain lowercase Latin letters.

Output

For each test case, after the swap, output a𝑎 and b𝑏, separated by a space.

Example

input

Copy

复制代码

bit set

cat dog

hot dog

uwu owo

cat cat

zzz zzz

output

Copy

复制代码

sit bet
dat cog
dot hog
owu uwo
cat cat
zzz zzz

解题说明：字符串题目，直接取值然后颠倒输出即可。

cpp 复制代码

#include<stdio.h>
int main()
{
	int n;
	scanf("%d", &n);
	while (n--)
	{
		char c[5], p[5];
		scanf("%s %s", c, p);
		char temp = c[0];
		c[0] = p[0];
		p[0] = temp;
		printf("%s %s\n", c, p);
	}
	return 0;
}