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
a = int(input())

while 1:
    b = []
    for i in range(0, 10):
        b.append(0)
    a += 1
    temp = a
    while temp > 0:
        r = temp % 10
        b[r] += 1
        temp = temp // 10

    f = 1
    for i in range(0, 10):
        if b[i] > 1:
            f = 0

    if f == 1:
        break
print(a)
