import java.util.*;

public class Main{
    public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
	int N = sc.nextInt();
	int d1=0, d2=0;
	int ans=0;

	for(int i=0; i<N; i++){
	    d1 = sc.nextInt();
	    d2 = sc.nextInt();
	    if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0;
	}
	if(ans>=3)System.out.println("Yes");
	else 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 d1=0, d2=0;
	int ans=0;

	for(int i=0; i<N; i++){
	    d1 = sc.nextInt();
	    d2 = sc.nextInt();
	    if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0;
	}
	if(ans>=3)System.out.println("Yes");
	else System.out.println("No");
    }
} Main public static void main(String[] args){
	Scanner sc = new Scanner(System.in);
	int N = sc.nextInt();
	int d1=0, d2=0;
	int ans=0;

	for(int i=0; i<N; i++){
	    d1 = sc.nextInt();
	    d2 = sc.nextInt();
	    if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0;
	}
	if(ans>=3)System.out.println("Yes");
	else System.out.println("No");
    } main {
	Scanner sc = new Scanner(System.in);
	int N = sc.nextInt();
	int d1=0, d2=0;
	int ans=0;

	for(int i=0; i<N; i++){
	    d1 = sc.nextInt();
	    d2 = sc.nextInt();
	    if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0;
	}
	if(ans>=3)System.out.println("Yes");
	else 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 d1=0 d1 0 d2=0; d2 0 int ans=0; ans 0 for(int i=0; i<N; i++){
	    d1 = sc.nextInt();
	    d2 = sc.nextInt();
	    if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0;
	} int i=0; int i=0; i 0 i<N i N i++ i++ i {
	    d1 = sc.nextInt();
	    d2 = sc.nextInt();
	    if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0;
	} {
	    d1 = sc.nextInt();
	    d2 = sc.nextInt();
	    if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0;
	} d1 = sc.nextInt() d1 sc.nextInt() sc.nextInt sc d2 = sc.nextInt() d2 sc.nextInt() sc.nextInt sc if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0; d1==d2 || ans>=3 d1==d2 d1 d2 ans>=3 ans 3 {
		if(ans>=3)continue;
		ans++;
	    } if(ans>=3)continue; ans>=3 ans 3 continue; ans++ ans ans=0 ans 0 if(ans>=3)System.out.println("Yes");
	else System.out.println("No"); ans>=3 ans 3 System.out.println("Yes") System.out.println System.out System System.out "Yes" 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 d1=0, d2=0;
	int ans=0;

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

	for(int i=0; i<N; i++){
	    d1 = sc.nextInt();
	    d2 = sc.nextInt();
	    if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0;
	}
	if(ans>=3)System.out.println("Yes");
	else 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 d1=0, d2=0;
	int ans=0;

	for(int i=0; i<N; i++){
	    d1 = sc.nextInt();
	    d2 = sc.nextInt();
	    if(d1==d2 || ans>=3){
		if(ans>=3)continue;
		ans++;
	    }else ans=0;
	}
	if(ans>=3)System.out.println("Yes");
	else System.out.println("No");
    }
}