#include<bits/stdc++.h>
#define fore(start,i,end) for(int i = start; i <= end; i++)
#define dbg(x)  #x << "=" << x << " "
#define dbg2(x,y)  "{" << x << "," << y << "} "
#define dbg3(x,y,k) "{" << x << "," << y << "," << k << "} "
#define dbg4(x,y,k,j) "{" << x << "," << y << "," << k << " , " << j << "} "

#define ll long long
#define f1 first
#define f2 second
#define inf 1000000005
#define debug_st(st) if (true) {cout << #st << " : "; stack<int> s123; while (!s123.empty()) cout << s123.top() << " ", s123.pop(); cout << "\n";}
#define debug_a(a,n) cout << #a << " : "; for(int i = 1; i <= n; i++) cout << a[i] << " "; cout << "\n";
#define debug_m(a,n,m) cout << #a << " :\n"; for(int i = 1; i <= n; i++){ for(int j = 1; j <= m; j++) cout << a[i][j] << " "; cout << "\n"; }cout << "\n";
#define debug_v(v) cout << #v << " : "; for(auto k : v) cout << k << " "; cout << "\n";
#define debug_s(s) cout << #s << " : "; for (auto k : s) cout << k < " "; cout << "\n";
#define debug_s2(s) cout << #s << " : "; for(auto k : s) cout << dbg2((*k).first,(*k).second); cout << "\n";
#define nmax 5000005



using namespace std;

ifstream in("pascal.in");
ofstream out("pascal.out");
int y,d,f2[nmax],f3[nmax],f5[nmax];
int main()
{int i,j,ans = 0;
    in >> y >> d;

    for (i = 1; i <= y; i++)
    {
        int x = i;
        int nr2 = 0, nr3 = 0 , nr5 = 0;
        while (x % 2 == 0)
        {
            nr2++;
            x /= 2;
        }

        x = i;
        while (x % 3 == 0)
        {
            nr3++;
            x /= 3;
        }

        x = i;
        while (x % 5 == 0)
        {
            nr5++;
            x /= 5;
        }
        f2[i] = nr2 + f2[i - 1];
        f3[i] = nr3 + f3[i - 1];
        f5[i] = nr5 + f5[i - 1];
    }

   // for (i = 1; i <= y; i++)
   // {
   //     cout << dbg(i) << dbg(f2[i]) << dbg(f3[i]) << dbg(f5[i]) << "\n";
   // }

    for (j = 0; j <= y; j++)
    {
        int nr2 = f2[y] - f2[y - j] - f2[j];
        int nr3 = f3[y] - f3[y - j] - f3[j];
        int nr5 = f5[y] - f5[y - j] - f5[j];

        if (d == 2)
        {
            if (nr2 > 0) ans++;
        }
        if (d == 3)
        {
            if (nr3 > 0) ans++;
        }
        if (d == 4)
        {
            if (nr2 > 2) ans++;
        }
        if (d == 5)
        {
            if (nr5 > 0) ans++;
        }
        if (d == 6)
        {
            if (nr2 > 0 && nr3 > 0) ans++;
        }
    }
    out << ans << "\n";
}