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())
n=n+1
f=1
while f==1:
    n1=n
    s=0
    a=[1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
    while n1!=0:
        a[n1%10]-=1
        n1=n1//10
    for i in range (10):
        if (a[i]<0):
            n=n+1
            s=s+1
            break
    if (s==0):
        print (n)
        f=0
        break