going up

import java.util.*;
public class Sederoleee
{
    static Scanner reader = new Scanner (System.in);

    /**
     * @param args
     */
    public static void main(String[] args)
    {

        int i = 0;
        int count = 0;
        while (i<=7)
        {
            int input = reader.nextInt();
            int input1 = reader.nextInt();
            if (input > input1)
            {
                count++;
            }
            input = input1;
            i++;
        }

        System.out.println (count);




        }

    }