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
current_year = input()
year = []
for i in current_year:
	i = int(i)
	year.append(i)


current_year = int(current_year)
for distinct in range(current_year + 1, 12345):
	distinct = str(distinct)
	years = []
	for f in distinct:
		f = str(f)
		years.append(f)

	repeat = set(years)
	if len(repeat) == len(years):
		output = ""
		for a in years:
			
			output += a

		break
	elif len(repeat) != len(years):
		continue

print(int(output))

