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
x = int(input())
for i in range(x+1,100000):
    s = str(i)
    o = s[0]
    t = s[1]
    th = s[2]
    f = s[3]

    if (o != t and o != th and o != f) and (o != t and t != th and t != f) and (th != t and o != th and th != f) and (f != t and f != th and o != f):
        print(int(s))
        break
