import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int count = 0;
        int i = sc.nextInt();
        for (int i1 = 0; i1 < i; i1++) {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        }
        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 count = 0;
        int i = sc.nextInt();
        for (int i1 = 0; i1 < i; i1++) {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        }
        System.out.println("No");
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int count = 0;
        int i = sc.nextInt();
        for (int i1 = 0; i1 < i; i1++) {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        }
        System.out.println("No");
    } main {
        Scanner sc = new Scanner(System.in);
        int count = 0;
        int i = sc.nextInt();
        for (int i1 = 0; i1 < i; i1++) {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        }
        System.out.println("No");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int count = 0; count 0 int i = sc.nextInt(); i sc.nextInt() sc.nextInt sc for (int i1 = 0; i1 < i; i1++) {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        } int i1 = 0; int i1 = 0; i1 0 i1 < i i1 i i1++ i1++ i1 {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        } {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        } int l = sc.nextInt(); l sc.nextInt() sc.nextInt sc int r = sc.nextInt(); r sc.nextInt() sc.nextInt sc if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            } l == r l r {
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            } count++ count if(count >= 3){
                    System.out.println("Yes");
                    return;
                } count >= 3 count 3 {
                    System.out.println("Yes");
                    return;
                } System.out.println("Yes") System.out.println System.out System System.out "Yes" return; {
                count = 0;
            } count = 0 count 0 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 count = 0;
        int i = sc.nextInt();
        for (int i1 = 0; i1 < i; i1++) {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        }
        System.out.println("No");
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int count = 0;
        int i = sc.nextInt();
        for (int i1 = 0; i1 < i; i1++) {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        }
        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 count = 0;
        int i = sc.nextInt();
        for (int i1 = 0; i1 < i; i1++) {
            int l = sc.nextInt();
            int r = sc.nextInt();
            if(l == r){
                count++;
                if(count >= 3){
                    System.out.println("Yes");
                    return;
                }
            }else{
                count = 0;
            }
        }
        System.out.println("No");
    }
}
