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
a = int(input())
s = 1
while s != 0 :
 s = 0
 a = a+1
 b = str(a)
 c=[]
 for j in range(len(b)):
  c.append(b[j])
 c.sort()
 for i in range(len(c)-1):
  if c[i] == c[i+1]:
   s = s+1 
print(a)
