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
x=int(input())

for i in range(x+1,9013):
    f = [0] * 10
    g=i %10
    f[g]=1
    s=i//10%10
    f[s]=1
    b=i//100%10
    f[b]=1
    q=i//1000
    f[q]=1
    if sum(f)==4:
        print(i)
        exit()
    else:
        continue
