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())
while n>=0 :
	n+=1
	x1=int(n/1000)
	x2=int(n/100)-10*x1
	x3=int(n/10)-10*x2-100*x1
	x4=n%10
	if x1==x2 or x2==x3 or x3==x4 or x4==x1 or x4==x2 or x3==x1 :
		continue
	else :
		break
print(n)