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

public class Main {
    public static void main(String[] args) {
        MyScanner sc = new MyScanner();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int n = sc.nextInt();
        boolean [] ok = new boolean[n];
        for (int i = 0; i < n; i++) {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        }
        for (int i = 0; i < n - 2; i++) {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        }
        out.println("No");
        out.close();
    }


    //-----------MyScanner class for faster input----------
    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;

        public MyScanner() {
            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.util.*; util.* java import java.io.*; io.* java public class Main {
    public static void main(String[] args) {
        MyScanner sc = new MyScanner();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int n = sc.nextInt();
        boolean [] ok = new boolean[n];
        for (int i = 0; i < n; i++) {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        }
        for (int i = 0; i < n - 2; i++) {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        }
        out.println("No");
        out.close();
    }


    //-----------MyScanner class for faster input----------
    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;

        public MyScanner() {
            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) {
        MyScanner sc = new MyScanner();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int n = sc.nextInt();
        boolean [] ok = new boolean[n];
        for (int i = 0; i < n; i++) {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        }
        for (int i = 0; i < n - 2; i++) {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        }
        out.println("No");
        out.close();
    } main {
        MyScanner sc = new MyScanner();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int n = sc.nextInt();
        boolean [] ok = new boolean[n];
        for (int i = 0; i < n; i++) {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        }
        for (int i = 0; i < n - 2; i++) {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        }
        out.println("No");
        out.close();
    } MyScanner sc = new MyScanner(); sc new MyScanner() PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out)); out new PrintWriter(new BufferedOutputStream(System.out)) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc boolean [] ok = new boolean[n]; ok new boolean[n] n for (int i = 0; i < n; i++) {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        } {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        } if (sc.nextInt() == sc.nextInt()) ok[i] = true; sc.nextInt() == sc.nextInt() sc.nextInt() sc.nextInt sc sc.nextInt() sc.nextInt sc ok[i] = true ok[i] ok i true for (int i = 0; i < n - 2; i++) {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        } int i = 0; int i = 0; i 0 i < n - 2 i n - 2 n 2 i++ i++ i {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        } {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        } if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            } ok[i] && ok[i + 1] && ok[i + 2] ok[i] && ok[i + 1] && ok[i + 2] ok[i] ok i ok[i + 1] ok i + 1 i 1 ok[i + 2] ok i + 2 i 2 {
                out.println("Yes");
                out.close();
                return;
            } out.println("Yes") out.println out "Yes" out.close() out.close out return; out.println("No") out.println out "No" out.close() out.close out String[] args args public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;

        public MyScanner() {
            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;
        }


    } MyScanner BufferedReader br; br StringTokenizer st; st public MyScanner() {
            br = new BufferedReader(new InputStreamReader(System.in));
        } MyScanner {
            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) {
        MyScanner sc = new MyScanner();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int n = sc.nextInt();
        boolean [] ok = new boolean[n];
        for (int i = 0; i < n; i++) {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        }
        for (int i = 0; i < n - 2; i++) {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        }
        out.println("No");
        out.close();
    }


    //-----------MyScanner class for faster input----------
    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;

        public MyScanner() {
            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) {
        MyScanner sc = new MyScanner();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int n = sc.nextInt();
        boolean [] ok = new boolean[n];
        for (int i = 0; i < n; i++) {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        }
        for (int i = 0; i < n - 2; i++) {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        }
        out.println("No");
        out.close();
    }


    //-----------MyScanner class for faster input----------
    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;

        public MyScanner() {
            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.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) {
        MyScanner sc = new MyScanner();
        PrintWriter out = new PrintWriter(new BufferedOutputStream(System.out));
        int n = sc.nextInt();
        boolean [] ok = new boolean[n];
        for (int i = 0; i < n; i++) {
            if (sc.nextInt() == sc.nextInt()) ok[i] = true;
        }
        for (int i = 0; i < n - 2; i++) {
            if (ok[i] && ok[i + 1] && ok[i + 2]) {
                out.println("Yes");
                out.close();
                return;
            }
        }
        out.println("No");
        out.close();
    }


    //-----------MyScanner class for faster input----------
    public static class MyScanner {
        BufferedReader br;
        StringTokenizer st;

        public MyScanner() {
            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;
        }


    }

}