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=input()
k=1
for i in range(n+1,9015):
    z=i
    x=z
    z1=z%10
    z=z/10
    z2=z%10
    z=z/10
    z3=z%10
    z=z/10
    z4=z%10
    
    if z1!=z2 and z2!=z3 and z3!=z4 and z1!=z4 and z1!=z3 and z2!=z4:
        print x
        break
    
        