import java.math.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

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++) {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    }
    System.out.println("No");
  }
} import java.math.*; math.* java import java.util.*; util.* java import java.util.function.*; function.* java.util import java.util.stream.*; stream.* 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++) {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    }
    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++) {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    }
    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++) {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    }
    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++) {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    } {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    } boolean b = sc.nextInt() == sc.nextInt(); b sc.nextInt() == sc.nextInt() sc.nextInt() sc.nextInt sc sc.nextInt() sc.nextInt sc if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      } b {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } 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; {
        count = 0;
      } count = 0 count 0 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++) {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    }
    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++) {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    }
    System.out.println("No");
  }
} Main
import java.math.*;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

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++) {
      boolean b = sc.nextInt() == sc.nextInt();
      if (b) {
        count++;
        if (count >= 3) {
          System.out.println("Yes");
          return;
        }
      } else {
        count = 0;
      }
    }
    System.out.println("No");
  }
}
