import java.util.*;
public class Main {
	public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(), count = 0;
        for (int i = 0; i < n; i++) {
            int a = sc.nextInt(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            if (count == 3) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(), count = 0;
        for (int i = 0; i < n; i++) {
            int a = sc.nextInt(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            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(), count = 0;
        for (int i = 0; i < n; i++) {
            int a = sc.nextInt(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            if (count == 3) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
	} main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(), count = 0;
        for (int i = 0; i < n; i++) {
            int a = sc.nextInt(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            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 count = 0; count 0 for (int i = 0; i < n; i++) {
            int a = sc.nextInt(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            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(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            if (count == 3) {
                System.out.println("Yes");
                return;
            }
        } {
            int a = sc.nextInt(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            if (count == 3) {
                System.out.println("Yes");
                return;
            }
        } int a = sc.nextInt() a sc.nextInt() sc.nextInt sc b = sc.nextInt(); b sc.nextInt() sc.nextInt sc if (a != b) {
                count = 0;
                continue;
            } a != b a b {
                count = 0;
                continue;
            } count = 0 count 0 continue; 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; 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(), count = 0;
        for (int i = 0; i < n; i++) {
            int a = sc.nextInt(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            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(), count = 0;
        for (int i = 0; i < n; i++) {
            int a = sc.nextInt(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            if (count == 3) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(), count = 0;
        for (int i = 0; i < n; i++) {
            int a = sc.nextInt(), b = sc.nextInt();
            if (a != b) {
                count = 0;
                continue;
            }
            count++;
            if (count == 3) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
	}
}