Help me in solving LELEMON problem

My issue

can not understand problem. want explanation of any test cases

My code

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

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

/* 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 

Learning course: Arrays, Strings & Sorting
Problem Link: CodeChef: Practical coding for everyone