#include<stdio.h>
int n,k,i,p=0;
int main(){
    scanf("%d",&n);
    scanf("%d",&k);
    for(i=1;i<=n;i++){
        if(i==k)p++;
        if(i%10==k&&i!=k)p++;
        if(i/10==k)p++;
        if(i/100==k)p++;
        if((i-(i/100)*100)/10==k&&i>=100)p++;
    }
    printf("%d",p);
}