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 Sun Oct 14 22:08:56 2018

@author: Quaint Sun
"""



y=input()

t=int(y)
while True:
    t=t+1
    listt=list(str(t))
    if listt[1]!=listt[0] and listt[0]!=listt[2]!=listt[1] and listt[2]!=listt[3]!=listt[1] and listt[3]!=listt[0]:
        print(t)
        break
    
    
    
    























