import java.util.*;
import java.io.*;
public class Main {
	public static void main(String args[]) {
		FastScanner in=new FastScanner();
		int n=in.nextInt();
		HashMap<Integer, Integer> hmap1=new HashMap<>();
		HashMap<Integer, Integer> hmap2=new HashMap<>();
		boolean chk=false;
		int ctr=0;
		for(int i=0;i<n;i++) {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		}
		if(!chk)
		System.out.println("No");
	}

	///////////////////////////
	static class FastScanner {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer("");

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

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

		int[] nextArray(int n) {
			int[] a = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = nextInt();
			return a;
		}

		long nextLong() {
			return Long.parseLong(next());
		}
	}
} import java.util.*; util.* java import java.io.*; io.* java public class Main {
	public static void main(String args[]) {
		FastScanner in=new FastScanner();
		int n=in.nextInt();
		HashMap<Integer, Integer> hmap1=new HashMap<>();
		HashMap<Integer, Integer> hmap2=new HashMap<>();
		boolean chk=false;
		int ctr=0;
		for(int i=0;i<n;i++) {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		}
		if(!chk)
		System.out.println("No");
	}

	///////////////////////////
	static class FastScanner {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer("");

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

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

		int[] nextArray(int n) {
			int[] a = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = nextInt();
			return a;
		}

		long nextLong() {
			return Long.parseLong(next());
		}
	}
} Main public static void main(String args[]) {
		FastScanner in=new FastScanner();
		int n=in.nextInt();
		HashMap<Integer, Integer> hmap1=new HashMap<>();
		HashMap<Integer, Integer> hmap2=new HashMap<>();
		boolean chk=false;
		int ctr=0;
		for(int i=0;i<n;i++) {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		}
		if(!chk)
		System.out.println("No");
	} main {
		FastScanner in=new FastScanner();
		int n=in.nextInt();
		HashMap<Integer, Integer> hmap1=new HashMap<>();
		HashMap<Integer, Integer> hmap2=new HashMap<>();
		boolean chk=false;
		int ctr=0;
		for(int i=0;i<n;i++) {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		}
		if(!chk)
		System.out.println("No");
	} FastScanner in=new FastScanner(); in new FastScanner() int n=in.nextInt(); n in.nextInt() in.nextInt in HashMap<Integer, Integer> hmap1=new HashMap<>(); hmap1 new HashMap<>() HashMap<Integer, Integer> hmap2=new HashMap<>(); hmap2 new HashMap<>() boolean chk=false; chk false int ctr=0; ctr 0 for(int i=0;i<n;i++) {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		} {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		} int x=in.nextInt(); x in.nextInt() in.nextInt in int y=in.nextInt(); y in.nextInt() in.nextInt in if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			} x==y x y {
				ctr++;
			} ctr++ ctr {
				ctr=0;
			} ctr=0 ctr 0 if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			} ctr==3 && !chk ctr==3 ctr 3 !chk chk {
				System.out.println("Yes");
				chk=true;
			} System.out.println("Yes") System.out.println System.out System System.out "Yes" chk=true chk true if(!chk)
		System.out.println("No"); !chk chk System.out.println("No") System.out.println System.out System System.out "No" String args[] args static class FastScanner {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer("");

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

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

		int[] nextArray(int n) {
			int[] a = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = nextInt();
			return a;
		}

		long nextLong() {
			return Long.parseLong(next());
		}
	} FastScanner BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) StringTokenizer st = new StringTokenizer(""); st new StringTokenizer("") String next() {
			while (!st.hasMoreTokens())
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			return st.nextToken();
		} next {
			while (!st.hasMoreTokens())
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			return st.nextToken();
		} while (!st.hasMoreTokens())
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				} !st.hasMoreTokens() st.hasMoreTokens() st.hasMoreTokens st 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 int[] nextArray(int n) {
			int[] a = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = nextInt();
			return a;
		} nextArray {
			int[] a = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = nextInt();
			return a;
		} int[] a = new int[n]; a new int[n] n for (int i = 0; i < n; i++)
				a[i] = nextInt(); int i = 0; int i = 0; i 0 i < n i n i++ i++ i a[i] = nextInt(); a[i] = nextInt() a[i] a i nextInt() nextInt return a; a int n n long nextLong() {
			return Long.parseLong(next());
		} nextLong {
			return Long.parseLong(next());
		} return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next public class Main {
	public static void main(String args[]) {
		FastScanner in=new FastScanner();
		int n=in.nextInt();
		HashMap<Integer, Integer> hmap1=new HashMap<>();
		HashMap<Integer, Integer> hmap2=new HashMap<>();
		boolean chk=false;
		int ctr=0;
		for(int i=0;i<n;i++) {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		}
		if(!chk)
		System.out.println("No");
	}

	///////////////////////////
	static class FastScanner {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer("");

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

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

		int[] nextArray(int n) {
			int[] a = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = nextInt();
			return a;
		}

		long nextLong() {
			return Long.parseLong(next());
		}
	}
} public class Main {
	public static void main(String args[]) {
		FastScanner in=new FastScanner();
		int n=in.nextInt();
		HashMap<Integer, Integer> hmap1=new HashMap<>();
		HashMap<Integer, Integer> hmap2=new HashMap<>();
		boolean chk=false;
		int ctr=0;
		for(int i=0;i<n;i++) {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		}
		if(!chk)
		System.out.println("No");
	}

	///////////////////////////
	static class FastScanner {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer("");

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

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

		int[] nextArray(int n) {
			int[] a = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = nextInt();
			return a;
		}

		long nextLong() {
			return Long.parseLong(next());
		}
	}
} Main
import java.util.*;
import java.io.*;
public class Main {
	public static void main(String args[]) {
		FastScanner in=new FastScanner();
		int n=in.nextInt();
		HashMap<Integer, Integer> hmap1=new HashMap<>();
		HashMap<Integer, Integer> hmap2=new HashMap<>();
		boolean chk=false;
		int ctr=0;
		for(int i=0;i<n;i++) {
			int x=in.nextInt();
			int y=in.nextInt();
			if(x==y) {
				ctr++;
			}
			else {
				ctr=0;
			}
			
			if(ctr==3 && !chk) {
				System.out.println("Yes");
				chk=true;
			}
		}
		if(!chk)
		System.out.println("No");
	}

	///////////////////////////
	static class FastScanner {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st = new StringTokenizer("");

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

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

		int[] nextArray(int n) {
			int[] a = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = nextInt();
			return a;
		}

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