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())
for i in range(n+1,9050):
    h={}
    temp=i
    #print(i)
    while temp>0:
        d=temp%10
        temp=temp//10
        if h.setdefault(d)==None:
            h.update({d:1})
        else:
            val=h.get(d)+1
            h.update({d:val})
    #print(h)
    if len(h)==4:
        print(i)
        break