
import java.util.Scanner;

/**
 * Feb 18, 2016 | 4:00:49 PM
 * <pre>
 * <u>Description</u>
 *
 * </pre>
 *
 * @author Essiennta Emmanuel (colourfulemmanuel@gmail.com)
 */
public class ProblemA{
    
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        sc.next();
        System.out.println(25);
        sc.close();
    }
}
