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
from collections import *

y = int(input())

def isBeauty(n):
	s = str(n)
	d = defaultdict(lambda : 0)
	for i in range(len(s)):
		if d[s[i]] > 0: return False
		d[s[i]] += 1
	return True

while True:
	y += 1
	if isBeauty(y):
		print(y)
		exit(0)
