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())
t = n+1 
a = []
ok = True
while ok:
    a.append(t//1000)
    if t//100%10!=t//1000 :
        a.append(t//100%10)
    if t//10%10!= t//100%10 and t//10%10!=t//1000:
        a.append(t//10%10)
    if t%10!=t//10%10 and t%10!=t//100%10 and t%10!=t//1000:
        a.append(t%10)
    if len(a)==4:
        ok = False
        print(t)
    else:
        a.clear()
        t+=1