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
number = int(input())
stop = False
while(not stop):
    number +=1
    if number//1000 != number%10 and number//1000 != ((number//100)%10) and number//1000 != ((number//10)%10) and number%10 != ((number//100)%10) and number%10 != ((number//10)%10) and ((number//100)%10) != number%10 and((number//100)%10) != ((number//10)%10) and((number//10)%10) != number%10:
        print(number)
        stop = True