import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int zorocount = 0;
        for (int i = 0; i < N; i++){
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        }
        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 zorocount = 0;
        for (int i = 0; i < N; i++){
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int zorocount = 0;
        for (int i = 0; i < N; i++){
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    } main {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int zorocount = 0;
        for (int i = 0; i < N; i++){
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        }
        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 zorocount = 0; zorocount 0 for (int i = 0; i < N; i++){
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        } {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        } int d1 = sc.nextInt(); d1 sc.nextInt() sc.nextInt sc int d2 = sc.nextInt(); d2 sc.nextInt() sc.nextInt sc if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            } d1 == d2 d1 d2 {
                zorocount++;
            } zorocount++ zorocount {
                zorocount = 0;
            } zorocount = 0 zorocount 0 if (zorocount > 2){
                System.out.println("Yes");
                return;
            } zorocount > 2 zorocount 2 {
                System.out.println("Yes");
                return;
            } System.out.println("Yes") System.out.println System.out System System.out "Yes" return; 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 zorocount = 0;
        for (int i = 0; i < N; i++){
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    }
} public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int zorocount = 0;
        for (int i = 0; i < N; i++){
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        }
        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 zorocount = 0;
        for (int i = 0; i < N; i++){
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2){
                zorocount++;
            }else {
                zorocount = 0;
            }
            if (zorocount > 2){
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    }
}
