import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
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)
    {
        FastReader s=new FastReader();
        int d=s.nextInt();
        int count=0;
        boolean ans=false;
        for(int i=0;i<d;i++) {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        }
        if(ans==true) 
            System.out.println("Yes");
        else
        	System.out.println("No");
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.StringTokenizer; StringTokenizer java.util 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)
    {
        FastReader s=new FastReader();
        int d=s.nextInt();
        int count=0;
        boolean ans=false;
        for(int i=0;i<d;i++) {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        }
        if(ans==true) 
            System.out.println("Yes");
        else
        	System.out.println("No");
    }
} Main public static void main(String[] args)
    {
        FastReader s=new FastReader();
        int d=s.nextInt();
        int count=0;
        boolean ans=false;
        for(int i=0;i<d;i++) {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        }
        if(ans==true) 
            System.out.println("Yes");
        else
        	System.out.println("No");
    } main {
        FastReader s=new FastReader();
        int d=s.nextInt();
        int count=0;
        boolean ans=false;
        for(int i=0;i<d;i++) {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        }
        if(ans==true) 
            System.out.println("Yes");
        else
        	System.out.println("No");
    } FastReader s=new FastReader(); s new FastReader() int d=s.nextInt(); d s.nextInt() s.nextInt s int count=0; count 0 boolean ans=false; ans false for(int i=0;i<d;i++) {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        } int i=0; int i=0; i 0 i<d i d i++ i++ i {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        } {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        } int x=s.nextInt(); x s.nextInt() s.nextInt s int y=s.nextInt(); y s.nextInt() s.nextInt s if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	} x==y x y {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	} count++ count if(count==3) {
        			ans=true;
        			break;
        		} count==3 count 3 {
        			ans=true;
        			break;
        		} ans=true ans true break; {
        		count=0;
        	} count=0 count 0 if(ans==true) 
            System.out.println("Yes");
        else
        	System.out.println("No"); ans==true ans true 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)
    {
        FastReader s=new FastReader();
        int d=s.nextInt();
        int count=0;
        boolean ans=false;
        for(int i=0;i<d;i++) {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        }
        if(ans==true) 
            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)
    {
        FastReader s=new FastReader();
        int d=s.nextInt();
        int count=0;
        boolean ans=false;
        for(int i=0;i<d;i++) {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        }
        if(ans==true) 
            System.out.println("Yes");
        else
        	System.out.println("No");
    }
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;
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)
    {
        FastReader s=new FastReader();
        int d=s.nextInt();
        int count=0;
        boolean ans=false;
        for(int i=0;i<d;i++) {
        	int x=s.nextInt();
        	int y=s.nextInt();
        	
        	if(x==y) {
        		count++;
        		if(count==3) {
        			ans=true;
        			break;
        		}
        	}
        	else {
        		count=0;
        	}
        }
        if(ans==true) 
            System.out.println("Yes");
        else
        	System.out.println("No");
    }
}