#include<iostream> #include<cstdio> using namespace std; int main(void) { freopen("count.in","r",stdin); freopen("count.out","w",stdout); int x,r,ans=0,num=0,i; cin>>r>>x; for(i=1;i<=r;i++) { num=i; while(num>0) { if(num%10==x) { ans++; } num/=10; } } cout<<ans<<endl; return 0; }