Problem:
Score: 200 points

Problem Statement

The number 105 is quite special - it is odd but still it has eight divisors.
Now, your task is this: how many odd numbers with exactly eight positive divisors are there between 1 and N (inclusive)?

Constraints

N is an integer between 1 and 200 (inclusive).

Input

Input is given from Standard Input in the following format:

N

Output

Print the count.

Sample Input 1

105

Sample Output 1

1

Among the numbers between 1 and 105, the only number that is odd and has exactly eight divisors is 105.

Sample Input 2

7

Sample Output 2

0

1 has one divisor. 3, 5 and 7 are all prime and have two divisors. Thus, there is no number that satisfies the condition.

Solution in Pascal (FPC 2.6.2) (judge verdict: Accepted)

var
  n,i,j,k,ans:longint;
begin
  readln(n);
  for i:=1 to n do
  begin
    k:=0;
    for j:=1 to i do
     if i mod j=0 then inc(k);
    if (k=8)and odd(i) then inc(ans);
  end;
  writeln(ans);
end.