You are given a string $s$. You need to find two non-empty strings $a$ and $b$ such that the following conditions are satisfied:
- Strings
$a$and$b$are both subsequences of$s$. - For each index
$i$, character$s_i$of string$s$must belong to exactly one of strings$a$or$b$. - String
$a$is lexicographically minimum possible; string$b$may be any possible string.
Given string $s$, print any valid $a$ and $b$.
Reminder:
A string $a$ ($b$) is a subsequence of a string $s$ if $a$ ($b$) can be obtained from $s$ by deletion of several (possibly, zero) elements. For example, "dores", "cf", and "for" are subsequences of "codeforces", while "decor" and "fork" are not.
A string $x$ is lexicographically smaller than a string $y$ if and only if one of the following holds:
$x$is a prefix of$y$, but$x \ne y$;- in the first position where
$x$and$y$differ, the string$x$has a letter that appears earlier in the alphabet than the corresponding letter in$y$.
Input
Each test contains multiple test cases. The first line contains the number of test cases $t$ ($1 \le t \le 1000$). Description of the test cases follows.
The first and only line of each test case contains one string $s$ ($2 \le |s| \le 100$ where $|s|$ means the length of $s$). String $s$ consists of lowercase Latin letters.
Output
For each test case, print the strings $a$ and $b$ that satisfy the given conditions. If there are multiple answers, print any.
Note
In the first test case, there are only two choices: either $a =$ f and $b = $ c or $a = $ c and $b = $ f. And $a = $c is lexicographically smaller than $a = $ f.
In the second test case, a is the only character in the string.
In the third test case, it can be proven that b is the lexicographically smallest subsequence of $s$. The second string can be of two variants; one of them is given here.
样例
3
fc
aaaa
thebrightboiler
c f
a aaa
b therightboiler
题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。