Help me in solving FIT problem

help
,
1

My issue

I cannot under stand

My code

/* package codechef; // 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 Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner obj = new Scanner(System.in);
		int a = obj.nextInt();
		System.out.println(5 * a);
	}
}

Learning course: Basic Math using Java
Problem Link: Fitness Practice Problem in - CodeChef

2

@gantisunil65
print 10*a