import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        boolean xbool=true,ybool=true;
        int x0=0,y0=0;
        for(int a0 = 0; a0 < n; a0++)
        {
            int x = in.nextInt();
            int y = in.nextInt();
            x0=x0^x;
            y0=y0^y;
        }
        if((x0==0)||(y0==0))
            System.out.println("YES");
        else
            System.out.println("NO");
    }
}