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
n=int(input())
n=n+1
lol = True
while lol:
  i=n%10
  j=(n//10)%10
  k=(n//100)%10
  l=(n//1000)%10
  if i!=j and i!=k and i!=l and j!=k and j!=l and k!=l:
    lol = False
    print(n)
  else:
    n+=1
