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.*;
import java.io.*;
public class beautiful_year 
{
    public static void main(String[] args)
    {
        FastReader sc=new FastReader();
        int n=sc.nextInt();
        n++;
        while(!isBeautiful(n))
        {
            n++;
        }
        System.out.println(n);
    }
    public static boolean isBeautiful(int m)
    {
        int count[]=new int[10];
        boolean isBeautiful=true;
        while(m>0)
        {
            {
                int r=m%10;
                count[r]++;
                m/=10;
            }
            for (int i=0;i<count.length;i++)
            {
                if(count[i]>1)
                isBeautiful=false;
            }
        }
        return isBeautiful;
    }
}
class FastReader extends beautiful_year
{ 
    BufferedReader br; 
    StringTokenizer st; 
    public FastReader() 
    { 
        br=new BufferedReader(new InputStreamReader(System.in)); 
    } 
    String next() 
    { 
        while (st == null || !st.hasMoreElements()) 
        { 
             try
            { 
                st = new StringTokenizer(br.readLine()); 
            } 
            catch (IOException  e) 
            { 
                e.printStackTrace(); 
            } 
        } 
        return st.nextToken(); 
    } 
  
    int nextInt() 
    { 
        return Integer.parseInt(next()); 
    } 
    long nextLong() 
    { 
        return Long.parseLong(next()); 
    } 
    double nextDouble() 
    { 
        return Double.parseDouble(next()); 
    } 
    String nextLine() 
    { 
        String str = ""; 
        try
        { 
            str = br.readLine(); 
        } 
        catch (IOException e) 
        { 
            e.printStackTrace(); 
        } 
        return str; 
    }
    char nextChar()
    {
        String str = ""; 
        try
        { 
            str = br.readLine(); 
        } 
        catch (IOException e) 
        { 
            e.printStackTrace(); 
        } 
        return str.charAt(0);
    } 
}
