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(""))
y=y+1
a=y%10
x=y%100
b=x//10
z=y%1000
c=z//100
v=y%10000
d=v//1000
while a==b or a==c or a==d or b==c or b==d or c==d:
  y=y+1
  a=y%10
  x=y%100
  b=x//10
  z=y%1000
  c=z//100
  v=y%10000
  d=v//1000
else:
  print(y)

		 	 			 	 	 				        	  	 	