#include<bits/stdc++.h>
using namespace std;
int main(){
int n,x,cnt = 0;
cin >> n >> x;
for(int i = 1;i <= n;i ++){
int t = i;
while(t){
if(t % 10 == x) cnt ++;
t /= 10;
}
}
cout << cnt;
return 0;
}#include<bits/stdc++.h>
using namespace std;
int main(){
int n,x,cnt = 0;
cin >> n >> x;
for(int i = 1;i <= n;i ++){
int t = i;
while(t){
if(t % 10 == x) cnt ++;
t /= 10;
}
}
cout << cnt;
return 0;
}