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.*;
public class Beautiful{
public static void main(String args[]){
int i,j,t,k;
Scanner sc=new Scanner(System.in);
int a=sc.nextInt();
int[] r=new int[4];
for(i=a+1;i<10000;i++){
t=i;
k=i;
while(k>0){
for(j=0;j<4;j++){
r[j]=k%10;
k=k/10;
}
}
if(r[0]==r[1]||r[0]==r[2]||r[0]==r[3]||r[1]==r[2]||r[1]==r[3]||r[2]==r[3]){

}
else{
System.out.println(t);
break;
}
}

}
}