/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
 public static void main(String[] args) {
        final long MICROS_PER_DAY = 24 * 60 * 60 * 1000 * 1000L;
        final long MILLIS_PER_DAY = 24 * 60 * 60 * 1000L;
        System.out.println(MICROS_PER_DAY / MILLIS_PER_DAY);

    }
}