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 Fri Sep  4 19:05:51 2020

@author: Yogesh Panjwani
"""

a=int(input())
a=a+1



def differentCharac(b):
    if len(str(b))==len(set(str(b))):
        return True
    else:
        return False
        
while(len(str(a))!=len(set(str(a)))):
    a=a+1
print(a)
            
    