import java.util.Scanner;

class p1 {

    static int CONES_PER_GALLON = 24;

    public static void main(String[] args) {
       int cones = 0;
       int gallons = 0;

       Scanner myScanner = new Scanner(System.in);

       // get the number of cones 
       System.out.printf("How many cones will you sell? ");
       cones = myScanner.nextInt();

       System.out.println();

       // compute the number of gallons needed.
       gallons = (int) Math.ceil(cones/(float)CONES_PER_GALLON);

       System.out.printf("You will need %d gallons of ice cream\n",gallons);
    }
}