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
inn = int(input())

while(inn!=None):
    check = False
    data = []
    inn+=1
    a = str(inn)
    for i in a:
        for j in data:
            if i == j:
                check = True
                break
        if check == True:
            break
        data.append(i)
    if check == False:
        break

print(inn)





