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())

p = 0

while(p != 1):
	n = n + 1
	no = str(n)
	for i in range(3):
		for j in range(i+1 , 4):
			#print(no[i] , " " , no[j])
			if(no[i] == no[j]):
				p = 0
				break
			else:
				p = 1
		if(p == 0):
			break

print(n)
	
