

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;
import java.util.*;
public class Main {
	
	
	
	public static void main(String[] args) {
		
		FastScanner fs = new FastScanner();
		int n = fs.nextInt();
		int d[][]=new int[n][2];
		int c=0;
		int flag=0;
		for(int i=0;i<n;i++)
		{
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		}
		if(flag==1)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
	
	
	
	static class FastScanner 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastScanner() 
        { 
            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; 
        } 
    }
	
	

} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.Arrays; Arrays java.util import java.util.StringTokenizer; StringTokenizer java.util import java.util.*; util.* java public class Main {
	
	
	
	public static void main(String[] args) {
		
		FastScanner fs = new FastScanner();
		int n = fs.nextInt();
		int d[][]=new int[n][2];
		int c=0;
		int flag=0;
		for(int i=0;i<n;i++)
		{
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		}
		if(flag==1)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
	
	
	
	static class FastScanner 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastScanner() 
        { 
            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; 
        } 
    }
	
	

} Main public static void main(String[] args) {
		
		FastScanner fs = new FastScanner();
		int n = fs.nextInt();
		int d[][]=new int[n][2];
		int c=0;
		int flag=0;
		for(int i=0;i<n;i++)
		{
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		}
		if(flag==1)
			System.out.println("Yes");
		else
			System.out.println("No");
	} main {
		
		FastScanner fs = new FastScanner();
		int n = fs.nextInt();
		int d[][]=new int[n][2];
		int c=0;
		int flag=0;
		for(int i=0;i<n;i++)
		{
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		}
		if(flag==1)
			System.out.println("Yes");
		else
			System.out.println("No");
	} FastScanner fs = new FastScanner(); fs new FastScanner() int n = fs.nextInt(); n fs.nextInt() fs.nextInt fs int d[][]=new int[n][2]; d new int[n][2] n 2 int c=0; c 0 int flag=0; flag 0 for(int i=0;i<n;i++)
		{
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		} {
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		} d[i][0]=fs.nextInt() d[i][0] d[i] d i 0 fs.nextInt() fs.nextInt fs d[i][1]=fs.nextInt() d[i][1] d[i] d i 1 fs.nextInt() fs.nextInt fs if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			} d[i][0]==d[i][1] d[i][0] d[i] d i 0 d[i][1] d[i] d i 1 {
					c++;
					if(c==3)
						flag=1;
				} c++ c if(c==3)
						flag=1; c==3 c 3 flag=1 flag 1 {
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			} if(c==3)
					{
						flag=1;
					}
				else
					c=0; c==3 c 3 {
						flag=1;
					} flag=1 flag 1 c=0 c 0 if(flag==1)
			System.out.println("Yes");
		else
			System.out.println("No"); flag==1 flag 1 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 FastScanner 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastScanner() 
        { 
            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; 
        } 
    } FastScanner BufferedReader br; br StringTokenizer st; st public FastScanner() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } FastScanner { 
            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 {
	
	
	
	public static void main(String[] args) {
		
		FastScanner fs = new FastScanner();
		int n = fs.nextInt();
		int d[][]=new int[n][2];
		int c=0;
		int flag=0;
		for(int i=0;i<n;i++)
		{
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		}
		if(flag==1)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
	
	
	
	static class FastScanner 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastScanner() 
        { 
            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 class Main {
	
	
	
	public static void main(String[] args) {
		
		FastScanner fs = new FastScanner();
		int n = fs.nextInt();
		int d[][]=new int[n][2];
		int c=0;
		int flag=0;
		for(int i=0;i<n;i++)
		{
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		}
		if(flag==1)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
	
	
	
	static class FastScanner 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastScanner() 
        { 
            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; 
        } 
    }
	
	

} Main


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;
import java.util.*;
public class Main {
	
	
	
	public static void main(String[] args) {
		
		FastScanner fs = new FastScanner();
		int n = fs.nextInt();
		int d[][]=new int[n][2];
		int c=0;
		int flag=0;
		for(int i=0;i<n;i++)
		{
			d[i][0]=fs.nextInt();
			d[i][1]=fs.nextInt();
			if(d[i][0]==d[i][1])
				{
					c++;
					if(c==3)
						flag=1;
				}
			else
			{
				if(c==3)
					{
						flag=1;
					}
				else
					c=0;
			}
			
		}
		if(flag==1)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
	
	
	
	static class FastScanner 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastScanner() 
        { 
            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; 
        } 
    }
	
	

}
