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())


test = 1
while(test):
    test = 0
    n += 1
    n1 = n
    arr = []

    while(n1):
        arr.append(n1 % 10)
        n1 //= 10

    i = 0
    while(i < 3):
        j = i + 1
        while(j <= 3):
            if(arr[i] == arr[j]):
                test = 1
                break
            j += 1
        if(test == 1):
            break
        i += 1
print(n)
