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
#-------------------------------------------------------------------------------
# Name:        module1
# Purpose:
#
# Author:      Rian Mandala Putra
#
# Created:     05/12/2017
# Copyright:   (c) Rian Mandala Putra 2017
# Licence:     <your licence>
#-------------------------------------------------------------------------------
tahun=int(input())
cek=False
while(cek==False):
    tahun+=1
    data=[]
    coba=str(tahun)
    for i in range(len(coba)):
        data+=[int(coba[i])]
    for i in range(len(data)):
        for j in range(i+1,len(data)):
            if data[i]==data[j]:
                cek=False
                break
            else:
                cek=True
        if cek==False:
            break
print(tahun)

