/* ***********************************************
Author        :guanjun
Created Time  :2016/2/18 11:03:23
File Name     :vijosp1848.cpp
************************************************ */
#include <iostream>
#include <cstring>
#include <cstdlib>
#include <stdio.h>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <string>
#include <math.h>
#include <stdlib.h>
#include <iomanip>
#include <list>
#include <deque>
#include <stack>
#define ull unsigned long long
#define ll long long
#define mod 90001
#define INF 0x3f3f3f3f
#define maxn 10000+10
#define cle(a) memset(a,0,sizeof(a))
const ull inf = 1LL << 61;
const double eps=1e-5;
using namespace std;

bool cmp(int a,int b){
    return a>b;
}
int main()
{
    #ifndef ONLINE_JUDGE
    //freopen("in.txt","r",stdin);
    #endif
    //freopen("out.txt","w",stdout);
    int n,x,a;
    while(cin>>n>>x){
        ll num=0;
        for(int i=1;i<=n;i++){
            a=i;
            //cout<<a<<endl;
            while(a>0){
                if(a%10==x)num++;
                a/=10;
            }
        }
        printf("%lld\n",num);
    }
    return 0;
}