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())+1
s = list(str(y))
found = True
while found:
    found = False
    for i in range(len(s)-1):
        for j in range(i+1, len(s)):
            if s[i]==s[j]:
                exp = len(s)-j-1
                y += pow(10, exp) - y%pow(10, exp)
                s = str(y)
                found = True
print(y)