import core.bitop, std.algorithm, std.ascii, std.bigint, std.conv, std.math,
    std.functional, std.numeric, std.range, std.stdio, std.string, std.random,
    std.typecons, std.container, std.format;

// dfmt off
T lread(T = long)(){return readln.chomp.to!T();}
T[] aryread(T = long)(){return readln.split.to!(T[])();}
void scan(TList...)(ref TList Args){auto line = readln.split();
foreach (i, T; TList){T val = line[i].to!(T);Args[i] = val;}}
alias sread = () => readln.chomp();enum MOD = 10 ^^ 9 + 7;
alias PQueue = BinaryHeap!(Array!long, "a<b");
// dfmt on

void main()
{
    long M, D;
    scan(M, D);
    long ans;
    foreach (m; 1 .. M + 1)
        foreach (d; 1 .. D + 1)
        {
            long d1 = d % 10;
            long d10 = d / 10;
            bool a = d1 >= 2;
            bool b = d10 >= 2;
            bool c = d1 * d10 == m;
            if (a && b && c)
                ans++;
        }
    writeln(ans);
}
