import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int cnt = 0;
    int n = sc.nextInt();
    for(int i = 0; i < n; i++){
      int d1 = sc.nextInt();
      int d2 = sc.nextInt();
      if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    }
    sc.close();
    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 cnt = 0;
    int n = sc.nextInt();
    for(int i = 0; i < n; i++){
      int d1 = sc.nextInt();
      int d2 = sc.nextInt();
      if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    }
    sc.close();
    System.out.println("No");
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int cnt = 0;
    int n = sc.nextInt();
    for(int i = 0; i < n; i++){
      int d1 = sc.nextInt();
      int d2 = sc.nextInt();
      if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    }
    sc.close();
    System.out.println("No");
  } main {
    Scanner sc = new Scanner(System.in);
    int cnt = 0;
    int n = sc.nextInt();
    for(int i = 0; i < n; i++){
      int d1 = sc.nextInt();
      int d2 = sc.nextInt();
      if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    }
    sc.close();
    System.out.println("No");
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int cnt = 0; cnt 0 int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc for(int i = 0; i < n; i++){
      int d1 = sc.nextInt();
      int d2 = sc.nextInt();
      if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    } 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) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    } {
      int d1 = sc.nextInt();
      int d2 = sc.nextInt();
      if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    } int d1 = sc.nextInt(); d1 sc.nextInt() sc.nextInt sc int d2 = sc.nextInt(); d2 sc.nextInt() sc.nextInt sc if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      } d1 == d2 d1 d2 {
        cnt++;
      } cnt++ cnt {
        cnt = 0;
      } cnt = 0 cnt 0 if(cnt >= 3){
        System.out.println("Yes");
        return;
      } cnt >= 3 cnt 3 {
        System.out.println("Yes");
        return;
      } System.out.println("Yes") System.out.println System.out System System.out "Yes" return; sc.close() sc.close sc 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 cnt = 0;
    int n = sc.nextInt();
    for(int i = 0; i < n; i++){
      int d1 = sc.nextInt();
      int d2 = sc.nextInt();
      if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    }
    sc.close();
    System.out.println("No");
  }
} public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int cnt = 0;
    int n = sc.nextInt();
    for(int i = 0; i < n; i++){
      int d1 = sc.nextInt();
      int d2 = sc.nextInt();
      if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    }
    sc.close();
    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 cnt = 0;
    int n = sc.nextInt();
    for(int i = 0; i < n; i++){
      int d1 = sc.nextInt();
      int d2 = sc.nextInt();
      if(d1 == d2) {
        cnt++;
      } else {
        cnt = 0;
      }
      if(cnt >= 3){
        System.out.println("Yes");
        return;
      }
    }
    sc.close();
    System.out.println("No");
  }
}