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 Lua (5.3.2) (judge verdict: Accepted)

local n = tonumber(io.read());

if n < 105 then
    print(0);
elseif n < 135 then
    print(1);
elseif n < 165 then
    print(2);
elseif n < 189 then
    print(3);
elseif n < 195 then
    print(4);
else
    print(5);
end