// The "Problem5" class.
import java.awt.*;
import java.io.*;

public class Problem5
{
    public static void main (String[] args) throws IOException
    {
	BufferedReader in = new BufferedReader (new FileReader ("DATA5.txt"));
	PrintWriter out = new PrintWriter (new FileWriter ("OUT5.txt"));
	for (int i = 0 ; i < 5 ; i++)
	{
	    int blah1 = Integer.parseInt (in.readLine ());
	    //String[] str1 = new String [blah1];
	    String[] str2 = new String [blah1];
	    int[] ggg = new int [blah1];
	    for (int g = 0 ; g < blah1 ; g++)
	    {
		String temp = in.readLine ();
		String[] str1 = temp.split (" ");
		ggg [g] = Integer.parseInt (str1 [2]);
	    }
	    out.println (ggg [0]);
	}
    } // main method
} // Problem5 class