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+1,10001):
    vis = [0] * 10
    nu = 0
    t = i
    while(i):
        if(vis[i%10]):
            nu = 1
            break
        vis[i%10] = 1
        i = (int)(i/10)
    if(nu==0):
        print(t)
        break