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())
while(1):
    n+=1
    a=list(str(n))
    t=0
    for i in range(len(a)):
        c=0
        for j in range(i+1,len(a)):
            if(a[i]==a[j]):
                c=1
                break
        if(c==1):
            t=1
            break
    if(t==0):
        break
print(n)