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
n = int(input())
x,y,z,p = 0,0,0,0
while 1:
	n = n + 1
	x = n%10
	y = (n//10)%10
	z = (n//100)%10
	p = n//1000

	if x!=y and x!=z and x!=p and y!=z and y!=p and z!=p:
		print(str(p)+str(z)+str(y)+str(x))
		break