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())
year=n+1
flag=1
L=list(str(year))
x=len(L)
while(flag):
    for i in range(x):
        for j in range(i+1,x):
            if L[j]==L[i]:
                flag=0
                break
        if flag==0:
            break
    if flag==1:
        print(year)
        break
    else:
        flag=1
        year+=1
        L=list(str(year))
        x=len(L)
