// editor4
#include<stdio.h>
int main()
{
    int N;
    scanf("%d",&N);
    if(N<1||N<1000){
        printf("Invalid input");
        return 0;
    }
    int thershold;
    scanf("%d",&thershold);
    
    if(thershold<0||thershold>9)
    {
        printf("Invalid input");
        return 0;
    }
    for(int i=0;i<N;i++){
        if(arr[i]==thershold){
            printf("%d",arr[i]);
            
        }
    }
    return 0;
}