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()
b = int(a)
b=b+1


while True:
    w= (b/1000)
    w = int(w)

    x = (b/100)%10
    x = int(x)


    y = b/10%10
    y = int(y)

    z = b%10
    z = int(z)

    if w !=x and w!=y and w!=z and x!=y and x!=z and y!=z:
        print(b)
        break
    else:
        b = b+1