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
x=int(input())
m=x+1
q=0
w=0
e=0
r=0
while m<9013:
   q=int(m/1000)
   w=int((m-q*1000)/100)
   e=int((m-q*1000-w*100)/10)
   r=int((m-q*1000-w*100-e*10)) 
   if(q==w or q==e or q==r or w==e or w==r or e==r):
       m=m+1
   else:
       print(m)
       break   