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
  i,j,s,n,ans:longint;
begin
  read(n);
  for i:=1 to n do
    if i mod 2=1 then
      begin
        s:=0;
        for j:=1 to i do
          if i mod j=0 then inc(s);
        if s=8 then inc(ans);
      end;
  write(ans);
end.