import java.util.*;
public class Main {
    public static void main(String[] args) {
        // 自分の得意な言語で
        // Let's チャレンジ！！
        Scanner scan = new Scanner(System.in);
        long n = scan.nextLong();
        for(long i = 0 ; i < n ; i++){
        	long a = scan.nextLong();
        	long b = scan.nextLong();
        }
		
        System.out.println("Yes");
    }
}