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
a = int(input())
count = 0
a += 1
while count == 0:
	b = a
	u = b % 10
	b -= u
	d = b % 100
	b -= d
	d /= 10
	c = b % 1000
	b -= c
	c /= 100
	m = b % 10000
	m /= 1000
	if u != d and u != c and u != m and d != c and d != m and c != m:
		count = 1
	else:
		a += 1

print(a)