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 judge = false;
		for (int i = 0; i < n; i++) {
			int d1 = sc.nextInt();
			int d2 = sc.nextInt();
			if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		}
		if (judge) {
			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 judge = false;
		for (int i = 0; i < n; i++) {
			int d1 = sc.nextInt();
			int d2 = sc.nextInt();
			if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		}
		if (judge) {
			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 judge = false;
		for (int i = 0; i < n; i++) {
			int d1 = sc.nextInt();
			int d2 = sc.nextInt();
			if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		}
		if (judge) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int count = 0;
		boolean judge = false;
		for (int i = 0; i < n; i++) {
			int d1 = sc.nextInt();
			int d2 = sc.nextInt();
			if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		}
		if (judge) {
			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 judge = false; judge false for (int i = 0; i < n; i++) {
			int d1 = sc.nextInt();
			int d2 = sc.nextInt();
			if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		} 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) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		} {
			int d1 = sc.nextInt();
			int d2 = sc.nextInt();
			if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		} int d1 = sc.nextInt(); d1 sc.nextInt() sc.nextInt sc int d2 = sc.nextInt(); d2 sc.nextInt() sc.nextInt sc if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			} d1 == d2 d1 d2 {
				count = count + 1;
			} count = count + 1 count count + 1 count 1 {
				count = 0;
			} count = 0 count 0 if (count == 3) {
				judge = true;
			} count == 3 count 3 {
				judge = true;
			} judge = true judge true if (judge) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} judge {
			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 judge = false;
		for (int i = 0; i < n; i++) {
			int d1 = sc.nextInt();
			int d2 = sc.nextInt();
			if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		}
		if (judge) {
			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 judge = false;
		for (int i = 0; i < n; i++) {
			int d1 = sc.nextInt();
			int d2 = sc.nextInt();
			if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		}
		if (judge) {
			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 judge = false;
		for (int i = 0; i < n; i++) {
			int d1 = sc.nextInt();
			int d2 = sc.nextInt();
			if (d1 == d2) {
				count = count + 1;
			} else {
				count = 0;
			}
			if (count == 3) {
				judge = true;
			}
		}
		if (judge) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}

}