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=input()

n=int(n)
x = n
while True:
    x+=1
    a=int(x/1000)
    b=int(((x%1000)-(x%100))/100)
    c=int(((x%100)-(x%10))/10)
    d=int(x%10)
    
    if a != b and a!=c and a!=d and b!=c and b!=d and c!=d:
        print(x)
        break