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
y=int(input())
s=str(y+1)
a=s[0]
b=s[1]
c=s[2]
d=s[3]
if s.count(a) == 1 and s.count(b) == 1 and s.count(c) == 1 and s.count(d) == 1:
    print(y+1)
else:
    for i in range(10**4):
        y=y+1
        s=str(y)
        a = s[0]
        b = s[1]
        c = s[2]
        d = s[3]

        if s.count(a) == 1 and s.count(b) == 1 and s.count(c) == 1 and s.count(d) == 1:
            print(y)
            break