import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        int N  = sc.nextInt();

        int seqCount = 0;
        int maxSeq = 0;
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        }

        if(maxSeq >=3){
            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 seqCount = 0;
        int maxSeq = 0;
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        }

        if(maxSeq >=3){
            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 seqCount = 0;
        int maxSeq = 0;
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        }

        if(maxSeq >=3){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }

    } main {
        Scanner sc = new Scanner(System.in);

        int N  = sc.nextInt();

        int seqCount = 0;
        int maxSeq = 0;
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        }

        if(maxSeq >=3){
            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 seqCount = 0; seqCount 0 int maxSeq = 0; maxSeq 0 for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        } {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        } int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            } a==b a b {
                seqCount++;
            } seqCount++ seqCount {
                seqCount=0;
            } seqCount=0 seqCount 0 maxSeq = Math.max(seqCount,maxSeq) maxSeq Math.max(seqCount,maxSeq) Math.max Math seqCount maxSeq if(maxSeq >=3){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        } maxSeq >=3 maxSeq 3 {
            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 seqCount = 0;
        int maxSeq = 0;
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        }

        if(maxSeq >=3){
            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 seqCount = 0;
        int maxSeq = 0;
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        }

        if(maxSeq >=3){
            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 seqCount = 0;
        int maxSeq = 0;
        for (int i = 0; i < N; i++) {
            int a = sc.nextInt();
            int b = sc.nextInt();

            if(a==b){
                seqCount++;
            }else{
                seqCount=0;
            }

            maxSeq = Math.max(seqCount,maxSeq);


        }

        if(maxSeq >=3){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }

    }

}
