const maxn=10000;
var
  n,i,j,s,k   : integer;
  a           : array[0..maxn] of integer;
begin
  readln(n,s);
  fillchar(a,sizeof(a),0);a[s]:=1;
  for i:=s+1 to n do
    for j:=s to i-1 do
      if (i-j)*100 mod j = 0 then
        begin
          if a[j]+1>a[i] then a[i]:=a[j]+1;
        end;
  k:=0;
  for i:=s to n do
    if a[i]>k then k:=a[i];
  writeln(k);
end.