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A8962 | Beautiful Year

时间限制1s
内存限制256MB
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题目描述

It seems like the year of 2013 came only yesterday. Do you know a curious fact? The year of 2013 is the first year after the old 1987 with only distinct digits.

Now you are suggested to solve the following problem: given a year number, find the minimum year number which is strictly larger than the given one and has only distinct digits.

输入格式

The single line contains integer $y$ $(1000<=y<=9000)$ — the year number.

输出格式

Print a single integer — the minimum year number that is strictly larger than $y$ and all it's digits are distinct. It is guaranteed that the answer exists.

输入输出样例

输入 #1
1987
输出 #1
2013
输入 #2
2013
输出 #2
2014
C++ 编辑器
输入
输出