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;
		for (int i = 0; i < n; i++) {

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

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

			if (count == 3) {
				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 count = 0;
		for (int i = 0; i < n; i++) {

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

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

			if (count == 3) {
				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 count = 0;
		for (int i = 0; i < n; i++) {

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

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

			if (count == 3) {
				System.out.println("Yes");
				return;
			}

		}
		System.out.println("No");
	} main {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int count = 0;
		for (int i = 0; i < n; i++) {

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

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

			if (count == 3) {
				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 count = 0; count 0 for (int i = 0; i < n; i++) {

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

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

			if (count == 3) {
				System.out.println("Yes");
				return;
			}

		} 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) {
				count++;
			} else {
				count = 0;
			}

			if (count == 3) {
				System.out.println("Yes");
				return;
			}

		} {

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

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

			if (count == 3) {
				System.out.println("Yes");
				return;
			}

		} int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc if (a == b) {
				count++;
			} else {
				count = 0;
			} a == b a b {
				count++;
			} count++ count {
				count = 0;
			} count = 0 count 0 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; 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;
		for (int i = 0; i < n; i++) {

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

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

			if (count == 3) {
				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 count = 0;
		for (int i = 0; i < n; i++) {

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

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

			if (count == 3) {
				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 count = 0;
		for (int i = 0; i < n; i++) {

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

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

			if (count == 3) {
				System.out.println("Yes");
				return;
			}

		}
		System.out.println("No");
	}
}