#include<iostream>
using namespace std;
int main()
{
    long long i,c,n,p=0,m,t;
    cin >> n;
    cin >> m;
    for (i=1;i<=n;i++)
    { 
        c = i%10;
        t = i/10;
        if(t == m)
        {
        	p+=1;
        	
		}
		if(c==m)
        	{
        		p+=1;
			}
       
    } 
    cout << p;
    return 0;
}