Help me in solving LBJ206B problem

help
,
1

My issue

My code

// Update the '_' below to solve this problem
import java.util.Scanner;

class Codechef
{
	public static void main (String[] args)
	{
	    int n = 10;
	    int x = 3;
	    System.out.println("The number of cards we need to flip is 7");
	    
	    n = 10;
	    x = 7;
	    System.out.println("The number of cards we need to flip is 3");
	    
	    n = 10;
	    x = 4;
	    System.out.println("The number of cards we need to flip is 6");
	    
	    n = 10;
	    x = 6;
	    System.out.println("The number of cards we need to flip is 4");

	}
}

Learning course: Java for problem solving - 1
Problem Link: CodeChef: Practical coding for everyone