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#include <bits/stdc++.h>
using namespace std;
int mycount(const int n, int x) {
int all = 0;
//n不能进行修改，需要克隆出来一个v
int v = n;
//循环求出此数的每一位
while (v > 0) {
int gewei = v % 10; //套路！
v = v / 10;
if (gewei == x) all++;
}
return all;
int main() {
ios::sync_with_stdio(false); //读入输出优化的强迫症
int n, x;
cin >> n >> x;
int allcount = 0;
for (int i = 1; i <= n; i++) {
allcount += mycount(i, x);
cout << allcount << endl;
return 0;
