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
hren = 0
year = int(input())
while hren == 0:
	year += 1
	counter = 0
	yearx = str(year)
	digits = list()
	for i in range(4):
		if digits.count(yearx[i]) == 0:
			digits.append(yearx[i])
	if len(digits) == 4:
		print(year)
		hren = 25