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
import java.util.Scanner;
public class main
{
public static boolean haveunidigit(int num)
{
int a[]=new int[4];
int k=0;
while(num>0)
{
int r=num%10;
a[k]=r;
k++;
num=num/10;
}
for(int i=0;i<4;i++)
{
for(int j=0;j<4;j++)
{
if(i!=j)
{
if(a[i]==a[j])
{
return false;
}
}
}
}
return true;
}
public static void main(String[]args)
{
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
for(int i=n+1;i<=9999;i++)
{
int num=i;
boolean bool=haveunidigit(num);
if(bool==true)
{
System.out.println(i);
break;
}
}
}
} 