
import java.util.*;
import java.io.*;

public class Main {
	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}

	

	public static void main(String[] args) throws FileNotFoundException {
	
	
 /*File file =new File("input.txt");
 Scanner scan=new Scanner(new FileInputStream(file));
 PrintWriter out=new PrintWriter("output.txt");
 */
FastReader scan=new FastReader();
 int n=scan.nextInt();
 int count=0;
 int max=0;
 while(n-->0){
	 int a=scan.nextInt();
	 int b=scan.nextInt();
	 if(a==b){
++count;
	 }
	 else{
		 count=0;
	 }
	 max=Math.max(count,max);
	 
 }

 if(max>=3){
	 System.out.println("Yes");
 }
 else
 System.out.println("No");

	}
}

 import java.util.*; util.* java import java.io.*; io.* java public class Main {
	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}

	

	public static void main(String[] args) throws FileNotFoundException {
	
	
 /*File file =new File("input.txt");
 Scanner scan=new Scanner(new FileInputStream(file));
 PrintWriter out=new PrintWriter("output.txt");
 */
FastReader scan=new FastReader();
 int n=scan.nextInt();
 int count=0;
 int max=0;
 while(n-->0){
	 int a=scan.nextInt();
	 int b=scan.nextInt();
	 if(a==b){
++count;
	 }
	 else{
		 count=0;
	 }
	 max=Math.max(count,max);
	 
 }

 if(max>=3){
	 System.out.println("Yes");
 }
 else
 System.out.println("No");

	}
} Main public static void main(String[] args) throws FileNotFoundException {
	
	
 /*File file =new File("input.txt");
 Scanner scan=new Scanner(new FileInputStream(file));
 PrintWriter out=new PrintWriter("output.txt");
 */
FastReader scan=new FastReader();
 int n=scan.nextInt();
 int count=0;
 int max=0;
 while(n-->0){
	 int a=scan.nextInt();
	 int b=scan.nextInt();
	 if(a==b){
++count;
	 }
	 else{
		 count=0;
	 }
	 max=Math.max(count,max);
	 
 }

 if(max>=3){
	 System.out.println("Yes");
 }
 else
 System.out.println("No");

	} main {
	
	
 /*File file =new File("input.txt");
 Scanner scan=new Scanner(new FileInputStream(file));
 PrintWriter out=new PrintWriter("output.txt");
 */
FastReader scan=new FastReader();
 int n=scan.nextInt();
 int count=0;
 int max=0;
 while(n-->0){
	 int a=scan.nextInt();
	 int b=scan.nextInt();
	 if(a==b){
++count;
	 }
	 else{
		 count=0;
	 }
	 max=Math.max(count,max);
	 
 }

 if(max>=3){
	 System.out.println("Yes");
 }
 else
 System.out.println("No");

	} FastReader scan=new FastReader(); scan new FastReader() int n=scan.nextInt(); n scan.nextInt() scan.nextInt scan int count=0; count 0 int max=0; max 0 while(n-->0){
	 int a=scan.nextInt();
	 int b=scan.nextInt();
	 if(a==b){
++count;
	 }
	 else{
		 count=0;
	 }
	 max=Math.max(count,max);
	 
 } n-->0 n-- n 0 {
	 int a=scan.nextInt();
	 int b=scan.nextInt();
	 if(a==b){
++count;
	 }
	 else{
		 count=0;
	 }
	 max=Math.max(count,max);
	 
 } int a=scan.nextInt(); a scan.nextInt() scan.nextInt scan int b=scan.nextInt(); b scan.nextInt() scan.nextInt scan if(a==b){
++count;
	 }
	 else{
		 count=0;
	 } a==b a b {
++count;
	 } ++count count {
		 count=0;
	 } count=0 count 0 max=Math.max(count,max) max Math.max(count,max) Math.max Math count max if(max>=3){
	 System.out.println("Yes");
 }
 else
 System.out.println("No"); max>=3 max 3 {
	 System.out.println("Yes");
 } 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 static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	} FastReader BufferedReader br; br StringTokenizer st; st public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		} FastReader {
			br = new BufferedReader(new InputStreamReader(System.in));
		} br = new BufferedReader(new InputStreamReader(System.in)) br new BufferedReader(new InputStreamReader(System.in)) String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		} next {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		} while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			} st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			} try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				} catch (IOException e) {
					e.printStackTrace();
				} IOException e {
					e.printStackTrace();
				} e.printStackTrace() e.printStackTrace e {
					st = new StringTokenizer(br.readLine());
				} st = new StringTokenizer(br.readLine()) st new StringTokenizer(br.readLine()) return st.nextToken(); st.nextToken() st.nextToken st int nextInt() {
			return Integer.parseInt(next());
		} nextInt {
			return Integer.parseInt(next());
		} return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next long nextLong() {
			return Long.parseLong(next());
		} nextLong {
			return Long.parseLong(next());
		} return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next double nextDouble() {
			return Double.parseDouble(next());
		} nextDouble {
			return Double.parseDouble(next());
		} return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		} nextLine {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		} String str = ""; str "" try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			} IOException e {
				e.printStackTrace();
			} e.printStackTrace() e.printStackTrace e {
				str = br.readLine();
			} str = br.readLine() str br.readLine() br.readLine br return str; str public class Main {
	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}

	

	public static void main(String[] args) throws FileNotFoundException {
	
	
 /*File file =new File("input.txt");
 Scanner scan=new Scanner(new FileInputStream(file));
 PrintWriter out=new PrintWriter("output.txt");
 */
FastReader scan=new FastReader();
 int n=scan.nextInt();
 int count=0;
 int max=0;
 while(n-->0){
	 int a=scan.nextInt();
	 int b=scan.nextInt();
	 if(a==b){
++count;
	 }
	 else{
		 count=0;
	 }
	 max=Math.max(count,max);
	 
 }

 if(max>=3){
	 System.out.println("Yes");
 }
 else
 System.out.println("No");

	}
} public class Main {
	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}

	

	public static void main(String[] args) throws FileNotFoundException {
	
	
 /*File file =new File("input.txt");
 Scanner scan=new Scanner(new FileInputStream(file));
 PrintWriter out=new PrintWriter("output.txt");
 */
FastReader scan=new FastReader();
 int n=scan.nextInt();
 int count=0;
 int max=0;
 while(n-->0){
	 int a=scan.nextInt();
	 int b=scan.nextInt();
	 if(a==b){
++count;
	 }
	 else{
		 count=0;
	 }
	 max=Math.max(count,max);
	 
 }

 if(max>=3){
	 System.out.println("Yes");
 }
 else
 System.out.println("No");

	}
} Main

import java.util.*;
import java.io.*;

public class Main {
	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

		public FastReader() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String next() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(next());
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		double nextDouble() {
			return Double.parseDouble(next());
		}

		String nextLine() {
			String str = "";
			try {
				str = br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str;
		}
	}

	

	public static void main(String[] args) throws FileNotFoundException {
	
	
 /*File file =new File("input.txt");
 Scanner scan=new Scanner(new FileInputStream(file));
 PrintWriter out=new PrintWriter("output.txt");
 */
FastReader scan=new FastReader();
 int n=scan.nextInt();
 int count=0;
 int max=0;
 while(n-->0){
	 int a=scan.nextInt();
	 int b=scan.nextInt();
	 if(a==b){
++count;
	 }
	 else{
		 count=0;
	 }
	 max=Math.max(count,max);
	 
 }

 if(max>=3){
	 System.out.println("Yes");
 }
 else
 System.out.println("No");

	}
}


