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())
a = []
for i in range (n+1,9999):
	digit1 = i//1000
	digit2 = (i%1000)//100
	digit3 = (i%100)//10
	digit4 = (i%10)
	if(digit1 != digit2 and digit1 != digit3 and digit1 != digit4 and digit2 != digit3 and digit2 != digit4 and digit3 != digit4):
		print (i)
		break
