Help me in solving LBJ17 problem

My issue

My code

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

class Codechef
	public static void main (String[] args)
		Scanner read = new Scanner(;
		int t = read.nextInt();
		for(int i=0; i<t; i++)
    		int x = read.nextInt();
    		int y = read.nextInt();
    	    int chefloor = x/10;
    	    int chefina  =y/10;
    	        System.out.println(chefina - chefloor);

Learning course: Solve Programming problems using Java
Problem Link: CodeChef: Practical coding for everyone