import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
      	int cnt = 0;
      	int a,b;
      	boolean nzj = true;
		
      	for(int i = 0;i < n && nzj;i++){
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        }
      	
		if(!nzj) System.out.println("Yes");
      	else System.out.println("No");
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
      	int cnt = 0;
      	int a,b;
      	boolean nzj = true;
		
      	for(int i = 0;i < n && nzj;i++){
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        }
      	
		if(!nzj) System.out.println("Yes");
      	else System.out.println("No");
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
      	int cnt = 0;
      	int a,b;
      	boolean nzj = true;
		
      	for(int i = 0;i < n && nzj;i++){
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        }
      	
		if(!nzj) System.out.println("Yes");
      	else System.out.println("No");
	} main {
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
      	int cnt = 0;
      	int a,b;
      	boolean nzj = true;
		
      	for(int i = 0;i < n && nzj;i++){
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        }
      	
		if(!nzj) System.out.println("Yes");
      	else System.out.println("No");
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int cnt = 0; cnt 0 int a a b; b boolean nzj = true; nzj true for(int i = 0;i < n && nzj;i++){
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        } int i = 0; int i = 0; i 0 i < n && nzj i < n i n nzj i++ i++ i {
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        } {
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        } a = sc.nextInt() a sc.nextInt() sc.nextInt sc b = sc.nextInt() b sc.nextInt() sc.nextInt sc if(a == b) cnt++;
          else cnt = 0; a == b a b cnt++ cnt cnt = 0 cnt 0 if(cnt == 3) nzj = false; cnt == 3 cnt 3 nzj = false nzj false if(!nzj) System.out.println("Yes");
      	else System.out.println("No"); !nzj nzj System.out.println("Yes") System.out.println System.out System System.out "Yes" System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
      	int cnt = 0;
      	int a,b;
      	boolean nzj = true;
		
      	for(int i = 0;i < n && nzj;i++){
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        }
      	
		if(!nzj) System.out.println("Yes");
      	else System.out.println("No");
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
      	int cnt = 0;
      	int a,b;
      	boolean nzj = true;
		
      	for(int i = 0;i < n && nzj;i++){
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        }
      	
		if(!nzj) System.out.println("Yes");
      	else System.out.println("No");
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = sc.nextInt();
      	int cnt = 0;
      	int a,b;
      	boolean nzj = true;
		
      	for(int i = 0;i < n && nzj;i++){
          a = sc.nextInt();
          b = sc.nextInt();
          if(a == b) cnt++;
          else cnt = 0;
          if(cnt == 3) nzj = false;
        }
      	
		if(!nzj) System.out.println("Yes");
      	else System.out.println("No");
	}
}