include <bits/stdc++.h>
using namespace std;
int n,k,ans;
int main(){
    cin>>n>>k;
    for(int i=1;i<=n;i++)
    {
    	if(i%10==k) ans++;
    	if(i/10%10==k) ans++;
    	if(i/100%10==k) ans++;
    	if(i/1000==k) ans++;
    }
    cout<<ans;
    return 0;
}

怎么办