G. Bonus · CODER HUSC

Time limit: 1.0 s
Memory limit: 256 MB
Points: 1partial
AC rate: 46.5%
Solvers: 127

An employee will receive a bonus each time the number of views on a video they created is positive and divisible by all integers from $2$ ~2~ to $10$ ~10~. Given an integer $x$ ~x~ $(0 \le x < 10^{18})$ ~(0 \le x < 10^{18})~, determine how many times the employee will receive the bonus if their video gets from $1$ ~1~ to $x$ ~x~ views.

Input

A single integer $x$ ~x~ $(0 \le x < 10^{18})$ ~(0 \le x < 10^{18})~ - the number of views on the video.

Output

A single integer - the number of times the employee will receive the bonus.

Samples

Sample Input 1

Sample Output 1

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