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())
for i in range(1,500):
 a=x+i
 d=a%10
 c=a%100 -d
 b= (a)%1000-c-d
 a= a%10000-c-d-b
 c=int(c/10)
 b=int(b/100)
 a=int(a/1000)
 if(a!=b and b!=c and c!=d and d!=a and c!=a and b!=d):
    print(str(a)+str(b)+str(c)+str(d))
    break