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 = False
x = int(input())
z = 0
while not a:
    z += 1
    w = x + z
    a1 = w //1000
    a2 = w // 100 - w // 1000 *10
    a3 = w // 10 - w // 100 * 10
    a4 = w %10
    if a1 != a2 and a1 != a3 and a1 != a4 and a2 != a3 and a2 != a4 and a3 != a4:
        a = True
        t = w
print(t)
