The package for this problem was not updated by the problem writer or Codeforces administration after we've upgraded the judging servers. To adjust the time limit constraint, a solution execution time will be multiplied by 2. For example, if your solution works for 400 ms on judging servers, then the value 800 ms will be displayed and used to determine the verdict.

Codeforces Round 166 (Div. 2) |
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Finished |

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brute force

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A. Beautiful Year

time limit per test

2 secondsmemory limit per test

256 megabytesinput

standard inputoutput

standard outputIt 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.

Input

The single line contains integer *y* (1000 ≤ *y* ≤ 9000) — the year number.

Output

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.

Examples

Input

1987

Output

2013

Input

2013

Output

2014

Codeforces (c) Copyright 2010-2023 Mike Mirzayanov

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