import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc =new Scanner(System.in);
    int N =sc.nextInt();
    int x =0;
    for(int i=0;i<N;i++){
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(0);}
    }
    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();
    int x =0;
    for(int i=0;i<N;i++){
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(0);}
    }
    System.out.println("No");
  }
} Main public static void main(String[] args){
    Scanner sc =new Scanner(System.in);
    int N =sc.nextInt();
    int x =0;
    for(int i=0;i<N;i++){
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(0);}
    }
    System.out.println("No");
  } main {
    Scanner sc =new Scanner(System.in);
    int N =sc.nextInt();
    int x =0;
    for(int i=0;i<N;i++){
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(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 x =0; x 0 for(int i=0;i<N;i++){
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(0);}
    } int i=0; int i=0; i 0 i<N i N i++ i++ i {
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(0);}
    } {
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(0);}
    } int D =sc.nextInt(); D sc.nextInt() sc.nextInt sc int E =sc.nextInt(); E sc.nextInt() sc.nextInt sc if(D==E){x=x+1;}
      else{x=0;} D==E D E {x=x+1;} x=x+1 x x+1 x 1 {x=0;} x=0 x 0 if(x==3){System.out.println("Yes");System.exit(0);} x==3 x 3 {System.out.println("Yes");System.exit(0);} System.out.println("Yes") System.out.println System.out System System.out "Yes" System.exit(0) System.exit System 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 x =0;
    for(int i=0;i<N;i++){
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(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 x =0;
    for(int i=0;i<N;i++){
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(0);}
    }
    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();
    int x =0;
    for(int i=0;i<N;i++){
      int D =sc.nextInt();
      int E =sc.nextInt();
      if(D==E){x=x+1;}
      else{x=0;}
      if(x==3){System.out.println("Yes");System.exit(0);}
    }
    System.out.println("No");
  }
}