import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		int count = 0;
		boolean flag = false;
		for(int i=0;i<n;i++){
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		}
		
		if(flag){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		int count = 0;
		boolean flag = false;
		for(int i=0;i<n;i++){
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		}
		
		if(flag){
			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 count = 0;
		boolean flag = false;
		for(int i=0;i<n;i++){
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		}
		
		if(flag){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	} main {

		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		int count = 0;
		boolean flag = false;
		for(int i=0;i<n;i++){
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		}
		
		if(flag){
			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 count = 0; count 0 boolean flag = false; flag false for(int i=0;i<n;i++){
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		} {
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		} sc.nextLine() sc.nextLine sc int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			} a==b a b {
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			} count++ count if(count >= 3){
					flag = true;
					break;
				} count >= 3 count 3 {
					flag = true;
					break;
				} flag = true flag true break; {
				count = 0;
			} count = 0 count 0 if(flag){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		} flag {
			System.out.println("Yes");
		} System.out.println("Yes") System.out.println System.out System System.out "Yes" {
			System.out.println("No");
		} 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 count = 0;
		boolean flag = false;
		for(int i=0;i<n;i++){
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		}
		
		if(flag){
			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 count = 0;
		boolean flag = false;
		for(int i=0;i<n;i++){
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		}
		
		if(flag){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();

		int count = 0;
		boolean flag = false;
		for(int i=0;i<n;i++){
			sc.nextLine();
			int a = sc.nextInt();
			int b = sc.nextInt();
			
			if(a==b){
				count++;
				if(count >= 3){
					flag = true;
					break;
				}
			}else{
				count = 0;
			}
		}
		
		if(flag){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
}
