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=int(input())
#a++;
for a in range(a+1,90000):
    u=a% 10
    d=a//10%10
    c=a//100%10
    m=a//1000
    if (((u!=d)and(u!=c))and((u!= m)and(d!=c))and((d!=m)and(m!=c))):
        print(a)
        break
