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
a = input()
a = int(a)
temp = a+1

while (temp> a):
    temp1 =temp
    e = temp%10
    temp = temp/10
    temp = int(temp)
    f = temp%10
    temp = temp/10
    temp = int(temp)
    g = temp%10
    temp = temp/10
    temp = int(temp)
    h = temp%10

    if (e==f or f==g or g==h or e==g or e==h or f==h ):
        temp = temp1+1
    elif (e!=f and f!=g and g!=h and e !=g and e!=h and f!=h ):
        print(temp1)
        
        