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A12914 | $Distinct Digits$

时间限制1s

内存限制256MB

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题目描述

You have two integers $l$ and $r$ . Find an integer $x$ which satisfies the conditions below: - $l \le x \le r$ . - All digits of $x$ are different. If there are multiple answers, print any of them.

输入格式

The first line contains two integers $l$ and $r$ ( $1 \le l \le r \le 10^{5}$ ).

输出格式

If an answer exists, print any of them. Otherwise, print $-1$ .

输入输出样例

输入 #1

121 130

输出 #1

输入 #2

98766 100000

输出 #2

-1

C++ 编辑器

输入

输出