import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

public class Main {

      public static void main(String[] args) {

            Scanner sc = new Scanner(System.in);
            int n = sc.nextInt();
            boolean[] isZorome = new boolean[n];
            for (int i = 0;i<n;i++){
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            }
            String ans = "No";
            for (int i = 0;i<n-2;i++){
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            }
            System.out.println(ans);
      }



}
 import java.util.ArrayList; ArrayList java.util import java.util.Arrays; Arrays java.util import java.util.List; List java.util 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();
            boolean[] isZorome = new boolean[n];
            for (int i = 0;i<n;i++){
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            }
            String ans = "No";
            for (int i = 0;i<n-2;i++){
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            }
            System.out.println(ans);
      }



} Main public static void main(String[] args) {

            Scanner sc = new Scanner(System.in);
            int n = sc.nextInt();
            boolean[] isZorome = new boolean[n];
            for (int i = 0;i<n;i++){
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            }
            String ans = "No";
            for (int i = 0;i<n-2;i++){
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            }
            System.out.println(ans);
      } main {

            Scanner sc = new Scanner(System.in);
            int n = sc.nextInt();
            boolean[] isZorome = new boolean[n];
            for (int i = 0;i<n;i++){
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            }
            String ans = "No";
            for (int i = 0;i<n-2;i++){
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            }
            System.out.println(ans);
      } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc boolean[] isZorome = new boolean[n]; isZorome new boolean[n] n for (int i = 0;i<n;i++){
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            } int i = 0; int i = 0; i 0 i<n i n i++ i++ i {
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            } {
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            } int d_1 = sc.nextInt(); d_1 sc.nextInt() sc.nextInt sc int d_2 = sc.nextInt(); d_2 sc.nextInt() sc.nextInt sc isZorome[i] = (d_1 == d_2) isZorome[i] isZorome i (d_1 == d_2) d_1 d_2 String ans = "No"; ans "No" for (int i = 0;i<n-2;i++){
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            } int i = 0; int i = 0; i 0 i<n-2 i n-2 n 2 i++ i++ i {
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            } {
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            } boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2]; sanren isZorome[i] && isZorome[i+1] && isZorome[i+2] isZorome[i] && isZorome[i+1] && isZorome[i+2] isZorome[i] isZorome i isZorome[i+1] isZorome i+1 i 1 isZorome[i+2] isZorome i+2 i 2 if (sanren){
                        ans = "Yes";
                  } sanren {
                        ans = "Yes";
                  } ans = "Yes" ans "Yes" System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {

      public static void main(String[] args) {

            Scanner sc = new Scanner(System.in);
            int n = sc.nextInt();
            boolean[] isZorome = new boolean[n];
            for (int i = 0;i<n;i++){
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            }
            String ans = "No";
            for (int i = 0;i<n-2;i++){
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            }
            System.out.println(ans);
      }



} public class Main {

      public static void main(String[] args) {

            Scanner sc = new Scanner(System.in);
            int n = sc.nextInt();
            boolean[] isZorome = new boolean[n];
            for (int i = 0;i<n;i++){
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            }
            String ans = "No";
            for (int i = 0;i<n-2;i++){
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            }
            System.out.println(ans);
      }



} Main
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Scanner;

public class Main {

      public static void main(String[] args) {

            Scanner sc = new Scanner(System.in);
            int n = sc.nextInt();
            boolean[] isZorome = new boolean[n];
            for (int i = 0;i<n;i++){
                  int d_1 = sc.nextInt();
                  int d_2 = sc.nextInt();
                  isZorome[i] = (d_1 == d_2);
            }
            String ans = "No";
            for (int i = 0;i<n-2;i++){
                  boolean sanren = isZorome[i] && isZorome[i+1] && isZorome[i+2];
                  if (sanren){
                        ans = "Yes";
                  }
            }
            System.out.println(ans);
      }



}

