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
z=int(input())
z+=1
status=True
cek=True
while cek==True :
    for i in range(3) :
        n=str(z)
        for j in range(i+1,4) :
            if str(n[i])==str(n[j]) :
                z+=1
                status=False
                break
            if i==2 and j==3 :
                cek=False
        if status==False :
            status=True
            break
print(z)