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
year = int(input())

for i in range(year + 1, 10000):
    y = i
    a = y // 1000
    y = y - a * 1000
    b = y // 100
    y = y - b * 100
    c = y // 10
    y = y - c * 10
    lst = [a, b, c, y]
    lst.sort()
    if lst[0] != lst[1] and lst[1] != lst[2] and lst[2] != lst[3]:
        print(i)
        break