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
y = int(input())

test = False
while test == False:
    y += 1
    d = y//1000
    c = (y - d*1000)//100
    b = (y - d*1000 - c*100)//10
    a = y%10
    if (a!=b and a!=c and a!=d and b!=c and b!=d and c!=d):
        test = True
        print(y)
			   		  			   	   	  		 		 	