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.

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
# -*- coding: utf-8 -*-
"""
Created on Wed Sep  9 09:50:56 2020

@author: lakne
"""
y = input()
x = int(y)
while True:
    i = 0
    x += 1
    y = str(x)
    for j in range(len(str(x))):
        if y.count(y[j]) > 1:
            i += 1
    if i == 0:
        print(x)
        break