// The "Problem2" class.
import java.awt.*;
import hsa.Console;

public class Problem2
{
    static Console c;           // The output console

    public static void main (String[] args)
    {
	c = new Console ();
	int count = 0;
	int sum[] = new int [5];
	int sum2[] = new int [5];
	int num[] = new int [20];
	int a = 0;
	int q = 1;
	for (int m = 0 ; m < 5 ; m++)
	{
	    String n = c.readLine ();
	    num [a] = Integer.parseInt ("" + n.charAt (0));
	    num [q] = Integer.parseInt ("" + n.charAt (2));
	    a = a + 2;
	    q = q + 2;
	}
	a = 0;
	q = 1;
	for (int b = 0 ; b < 5 ; b++)
	{
	    sum [b] = c.readInt ();
	    sum2 [b] = num [a] + num [q];
	    a = a + 2;
	    q = q + 2;
	}
	for (int i = 0 ; i < 5 ; i++)
	{
	    if (sum [i] == sum2 [i])
	    {
		count++;
	    }
	}
	c.println (count);
	// Place your program here.  'c' is the output console
    } // main method
} // Problem2 class