import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		int a[]=new int[n];
		int b[]=new int[n];
		boolean flag=false;
		for(int i=0;i<n;i++) {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		}
		int count=0;
		for(int i=0;i<n;i++) {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		}
		if(flag)
			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 a[]=new int[n];
		int b[]=new int[n];
		boolean flag=false;
		for(int i=0;i<n;i++) {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		}
		int count=0;
		for(int i=0;i<n;i++) {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		}
		if(flag)
			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 a[]=new int[n];
		int b[]=new int[n];
		boolean flag=false;
		for(int i=0;i<n;i++) {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		}
		int count=0;
		for(int i=0;i<n;i++) {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		}
		if(flag)
			System.out.println("Yes");
		else
			System.out.println("No");
	} main {
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		int a[]=new int[n];
		int b[]=new int[n];
		boolean flag=false;
		for(int i=0;i<n;i++) {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		}
		int count=0;
		for(int i=0;i<n;i++) {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		}
		if(flag)
			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 a[]=new int[n]; a new int[n] n int b[]=new int[n]; b new int[n] n boolean flag=false; flag false for(int i=0;i<n;i++) {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		} {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		} a[i]=sc.nextInt() a[i] a i sc.nextInt() sc.nextInt sc b[i]=sc.nextInt() b[i] b i sc.nextInt() sc.nextInt sc int count=0; count 0 for(int i=0;i<n;i++) {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		} {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		} if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			} a[i]==b[i] a[i] a i b[i] b i {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			} count++ count if(count==3) {
					flag=true;
					break;
				} count==3 count 3 {
					flag=true;
					break;
				} flag=true flag true break; {
				count=0;
			} count=0 count 0 if(flag)
			System.out.println("Yes");
		else
			System.out.println("No"); flag 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 a[]=new int[n];
		int b[]=new int[n];
		boolean flag=false;
		for(int i=0;i<n;i++) {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		}
		int count=0;
		for(int i=0;i<n;i++) {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		}
		if(flag)
			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 a[]=new int[n];
		int b[]=new int[n];
		boolean flag=false;
		for(int i=0;i<n;i++) {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		}
		int count=0;
		for(int i=0;i<n;i++) {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		}
		if(flag)
			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 a[]=new int[n];
		int b[]=new int[n];
		boolean flag=false;
		for(int i=0;i<n;i++) {
			a[i]=sc.nextInt();
			b[i]=sc.nextInt();
		}
		int count=0;
		for(int i=0;i<n;i++) {
			if(a[i]==b[i]) {
				count++;
				if(count==3) {
					flag=true;
					break;
				}
			}
			else {
				count=0;
			}
		}
		if(flag)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
}