import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.BufferedWriter;
import java.io.Writer;
import java.io.OutputStreamWriter;
import java.util.InputMismatchException;
import java.io.IOException;
import java.io.InputStream;

/*
 * Copyright (c) --> Arpit
 * Date Created : 19/9/2020
 * Have A Good Day !
 */

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author Arpit
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        FastReader in = new FastReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        BGoToJail solver = new BGoToJail();
        solver.solve(1, in, out);
        out.close();
    }
    
    static class BGoToJail {
        public void solve(int testNumber, FastReader r, OutputWriter out) {
            int n = r.nextInt();
            boolean flag = false;
            int[] d_x = new int[n];
            int[] d_y = new int[n];
            for (int i = 0; i < n; i++) {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            }
            for (int i = 0; i < n; i++) {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            }
            out.println(flag ? "Yes" : "No");
        }
        
    }
    
    static class FastReader {
        private InputStream stream;
        private byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;
        private FastReader.SpaceCharFilter filter;
        
        public FastReader(InputStream stream) {
            this.stream = stream;
        }
        
        public int read() {
            if (numChars == -1) {
                throw new InputMismatchException();
            }
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            }
            return buf[curChar++];
        }
        
        public int nextInt() {
            int c = read();
            while (isSpaceChar(c)) {
                c = read();
            }
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = read();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } while (!isSpaceChar(c));
            return res * sgn;
        }
        
        public boolean isSpaceChar(int c) {
            if (filter != null) {
                return filter.isSpaceChar(c);
            }
            return isWhitespace(c);
        }
        
        public static boolean isWhitespace(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }
        
        public interface SpaceCharFilter {
            public boolean isSpaceChar(int ch);
            
        }
        
    }
    
    static class OutputWriter {
        private final PrintWriter writer;
        
        public OutputWriter(OutputStream outputStream) {
            writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
        }
        
        public OutputWriter(Writer writer) {
            this.writer = new PrintWriter(writer);
        }
        
        public void print(Object... objects) {
            for (int i = 0; i < objects.length; i++) {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            }
        }
        
        public void println(Object... objects) {
            print(objects);
            writer.println();
        }
        
        public void close() {
            writer.close();
        }
        
    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.OutputStream; OutputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.io.BufferedWriter; BufferedWriter java.io import java.io.Writer; Writer java.io import java.io.OutputStreamWriter; OutputStreamWriter java.io import java.util.InputMismatchException; InputMismatchException java.util import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        FastReader in = new FastReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        BGoToJail solver = new BGoToJail();
        solver.solve(1, in, out);
        out.close();
    }
    
    static class BGoToJail {
        public void solve(int testNumber, FastReader r, OutputWriter out) {
            int n = r.nextInt();
            boolean flag = false;
            int[] d_x = new int[n];
            int[] d_y = new int[n];
            for (int i = 0; i < n; i++) {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            }
            for (int i = 0; i < n; i++) {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            }
            out.println(flag ? "Yes" : "No");
        }
        
    }
    
    static class FastReader {
        private InputStream stream;
        private byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;
        private FastReader.SpaceCharFilter filter;
        
        public FastReader(InputStream stream) {
            this.stream = stream;
        }
        
        public int read() {
            if (numChars == -1) {
                throw new InputMismatchException();
            }
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            }
            return buf[curChar++];
        }
        
        public int nextInt() {
            int c = read();
            while (isSpaceChar(c)) {
                c = read();
            }
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = read();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } while (!isSpaceChar(c));
            return res * sgn;
        }
        
        public boolean isSpaceChar(int c) {
            if (filter != null) {
                return filter.isSpaceChar(c);
            }
            return isWhitespace(c);
        }
        
        public static boolean isWhitespace(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }
        
        public interface SpaceCharFilter {
            public boolean isSpaceChar(int ch);
            
        }
        
    }
    
    static class OutputWriter {
        private final PrintWriter writer;
        
        public OutputWriter(OutputStream outputStream) {
            writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
        }
        
        public OutputWriter(Writer writer) {
            this.writer = new PrintWriter(writer);
        }
        
        public void print(Object... objects) {
            for (int i = 0; i < objects.length; i++) {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            }
        }
        
        public void println(Object... objects) {
            print(objects);
            writer.println();
        }
        
        public void close() {
            writer.close();
        }
        
    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        FastReader in = new FastReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        BGoToJail solver = new BGoToJail();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        FastReader in = new FastReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        BGoToJail solver = new BGoToJail();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out FastReader in = new FastReader(inputStream); in new FastReader(inputStream) OutputWriter out = new OutputWriter(outputStream); out new OutputWriter(outputStream) BGoToJail solver = new BGoToJail(); solver new BGoToJail() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class BGoToJail {
        public void solve(int testNumber, FastReader r, OutputWriter out) {
            int n = r.nextInt();
            boolean flag = false;
            int[] d_x = new int[n];
            int[] d_y = new int[n];
            for (int i = 0; i < n; i++) {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            }
            for (int i = 0; i < n; i++) {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            }
            out.println(flag ? "Yes" : "No");
        }
        
    } BGoToJail public void solve(int testNumber, FastReader r, OutputWriter out) {
            int n = r.nextInt();
            boolean flag = false;
            int[] d_x = new int[n];
            int[] d_y = new int[n];
            for (int i = 0; i < n; i++) {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            }
            for (int i = 0; i < n; i++) {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            }
            out.println(flag ? "Yes" : "No");
        } solve {
            int n = r.nextInt();
            boolean flag = false;
            int[] d_x = new int[n];
            int[] d_y = new int[n];
            for (int i = 0; i < n; i++) {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            }
            for (int i = 0; i < n; i++) {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            }
            out.println(flag ? "Yes" : "No");
        } int n = r.nextInt(); n r.nextInt() r.nextInt r boolean flag = false; flag false int[] d_x = new int[n]; d_x new int[n] n int[] d_y = new int[n]; d_y new int[n] n for (int i = 0; i < n; i++) {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            } {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            } d_x[i] = r.nextInt() d_x[i] d_x i r.nextInt() r.nextInt r d_y[i] = r.nextInt() d_y[i] d_y i r.nextInt() r.nextInt r for (int i = 0; i < n; i++) {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            } {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            } if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                } d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2] i + 2 < n d_x[i + 1] == d_y[i + 1] d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2] d_x[i] == d_y[i] d_x[i] d_x i d_y[i] d_y i i + 1 < n i + 1 i 1 n d_x[i + 1] == d_y[i + 1] d_x[i + 1] d_x i + 1 i 1 d_y[i + 1] d_y i + 1 i 1 i + 2 < n i + 2 i 2 n d_x[i + 2] == d_y[i + 2] d_x[i + 2] d_x i + 2 i 2 d_y[i + 2] d_y i + 2 i 2 {
                    flag = true;
                    break;
                } flag = true flag true break; out.println(flag ? "Yes" : "No") out.println out flag ? "Yes" : "No" flag "Yes" "No" int testNumber testNumber FastReader r r OutputWriter out out static class FastReader {
        private InputStream stream;
        private byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;
        private FastReader.SpaceCharFilter filter;
        
        public FastReader(InputStream stream) {
            this.stream = stream;
        }
        
        public int read() {
            if (numChars == -1) {
                throw new InputMismatchException();
            }
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            }
            return buf[curChar++];
        }
        
        public int nextInt() {
            int c = read();
            while (isSpaceChar(c)) {
                c = read();
            }
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = read();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } while (!isSpaceChar(c));
            return res * sgn;
        }
        
        public boolean isSpaceChar(int c) {
            if (filter != null) {
                return filter.isSpaceChar(c);
            }
            return isWhitespace(c);
        }
        
        public static boolean isWhitespace(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }
        
        public interface SpaceCharFilter {
            public boolean isSpaceChar(int ch);
            
        }
        
    } FastReader private InputStream stream; stream private byte[] buf = new byte[1024]; buf new byte[1024] 1024 private int curChar; curChar private int numChars; numChars private FastReader.SpaceCharFilter filter; filter public FastReader(InputStream stream) {
            this.stream = stream;
        } FastReader {
            this.stream = stream;
        } this.stream = stream this.stream this this.stream stream InputStream stream stream public int read() {
            if (numChars == -1) {
                throw new InputMismatchException();
            }
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            }
            return buf[curChar++];
        } read {
            if (numChars == -1) {
                throw new InputMismatchException();
            }
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            }
            return buf[curChar++];
        } if (numChars == -1) {
                throw new InputMismatchException();
            } numChars == -1 numChars -1 1 {
                throw new InputMismatchException();
            } throw new InputMismatchException(); new InputMismatchException() if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            } curChar >= numChars curChar numChars {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            } curChar = 0 curChar 0 try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                } catch (IOException e) {
                    throw new InputMismatchException();
                } IOException e {
                    throw new InputMismatchException();
                } throw new InputMismatchException(); new InputMismatchException() {
                    numChars = stream.read(buf);
                } numChars = stream.read(buf) numChars stream.read(buf) stream.read stream buf if (numChars <= 0) {
                    return -1;
                } numChars <= 0 numChars 0 {
                    return -1;
                } return -1; -1 1 return buf[curChar++]; buf[curChar++] buf curChar++ curChar public int nextInt() {
            int c = read();
            while (isSpaceChar(c)) {
                c = read();
            }
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = read();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } while (!isSpaceChar(c));
            return res * sgn;
        } nextInt {
            int c = read();
            while (isSpaceChar(c)) {
                c = read();
            }
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = read();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } while (!isSpaceChar(c));
            return res * sgn;
        } int c = read(); c read() read while (isSpaceChar(c)) {
                c = read();
            } isSpaceChar(c) isSpaceChar c {
                c = read();
            } c = read() c read() read int sgn = 1; sgn 1 if (c == '-') {
                sgn = -1;
                c = read();
            } c == '-' c '-' {
                sgn = -1;
                c = read();
            } sgn = -1 sgn -1 1 c = read() c read() read int res = 0; res 0 do {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } while (!isSpaceChar(c)); !isSpaceChar(c) isSpaceChar(c) isSpaceChar c {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                } c < '0' || c > '9' c < '0' c '0' c > '9' c '9' {
                    throw new InputMismatchException();
                } throw new InputMismatchException(); new InputMismatchException() res *= 10 res 10 res += c - '0' res c - '0' c '0' c = read() c read() read return res * sgn; res * sgn res sgn public boolean isSpaceChar(int c) {
            if (filter != null) {
                return filter.isSpaceChar(c);
            }
            return isWhitespace(c);
        } isSpaceChar {
            if (filter != null) {
                return filter.isSpaceChar(c);
            }
            return isWhitespace(c);
        } if (filter != null) {
                return filter.isSpaceChar(c);
            } filter != null filter null {
                return filter.isSpaceChar(c);
            } return filter.isSpaceChar(c); filter.isSpaceChar(c) filter.isSpaceChar filter c return isWhitespace(c); isWhitespace(c) isWhitespace c int c c public static boolean isWhitespace(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        } isWhitespace {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        } return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1 c == '\t' c == '\r' c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1 c == ' ' c ' ' c == '\n' c '\n' c == '\r' c '\r' c == '\t' c '\t' c == -1 c -1 1 int c c public interface SpaceCharFilter {
            public boolean isSpaceChar(int ch);
            
        } SpaceCharFilter public boolean isSpaceChar(int ch); isSpaceChar int ch ch static class OutputWriter {
        private final PrintWriter writer;
        
        public OutputWriter(OutputStream outputStream) {
            writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
        }
        
        public OutputWriter(Writer writer) {
            this.writer = new PrintWriter(writer);
        }
        
        public void print(Object... objects) {
            for (int i = 0; i < objects.length; i++) {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            }
        }
        
        public void println(Object... objects) {
            print(objects);
            writer.println();
        }
        
        public void close() {
            writer.close();
        }
        
    } OutputWriter private final PrintWriter writer; writer public OutputWriter(OutputStream outputStream) {
            writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
        } OutputWriter {
            writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
        } writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream))) writer new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream))) OutputStream outputStream outputStream public OutputWriter(Writer writer) {
            this.writer = new PrintWriter(writer);
        } OutputWriter {
            this.writer = new PrintWriter(writer);
        } this.writer = new PrintWriter(writer) this.writer this this.writer new PrintWriter(writer) Writer writer writer public void print(Object... objects) {
            for (int i = 0; i < objects.length; i++) {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            }
        } print {
            for (int i = 0; i < objects.length; i++) {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            }
        } for (int i = 0; i < objects.length; i++) {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            } int i = 0; int i = 0; i 0 i < objects.length i objects.length objects objects.length i++ i++ i {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            } {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            } writer.print(objects[i]) writer.print writer objects[i] objects i if (i != objects.length - 1) writer.print(" "); i != objects.length - 1 i objects.length - 1 objects.length objects objects.length 1 writer.print(" ") writer.print writer " " Object... objects objects public void println(Object... objects) {
            print(objects);
            writer.println();
        } println {
            print(objects);
            writer.println();
        } print(objects) print objects writer.println() writer.println writer Object... objects objects public void close() {
            writer.close();
        } close {
            writer.close();
        } writer.close() writer.close writer public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        FastReader in = new FastReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        BGoToJail solver = new BGoToJail();
        solver.solve(1, in, out);
        out.close();
    }
    
    static class BGoToJail {
        public void solve(int testNumber, FastReader r, OutputWriter out) {
            int n = r.nextInt();
            boolean flag = false;
            int[] d_x = new int[n];
            int[] d_y = new int[n];
            for (int i = 0; i < n; i++) {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            }
            for (int i = 0; i < n; i++) {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            }
            out.println(flag ? "Yes" : "No");
        }
        
    }
    
    static class FastReader {
        private InputStream stream;
        private byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;
        private FastReader.SpaceCharFilter filter;
        
        public FastReader(InputStream stream) {
            this.stream = stream;
        }
        
        public int read() {
            if (numChars == -1) {
                throw new InputMismatchException();
            }
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            }
            return buf[curChar++];
        }
        
        public int nextInt() {
            int c = read();
            while (isSpaceChar(c)) {
                c = read();
            }
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = read();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } while (!isSpaceChar(c));
            return res * sgn;
        }
        
        public boolean isSpaceChar(int c) {
            if (filter != null) {
                return filter.isSpaceChar(c);
            }
            return isWhitespace(c);
        }
        
        public static boolean isWhitespace(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }
        
        public interface SpaceCharFilter {
            public boolean isSpaceChar(int ch);
            
        }
        
    }
    
    static class OutputWriter {
        private final PrintWriter writer;
        
        public OutputWriter(OutputStream outputStream) {
            writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
        }
        
        public OutputWriter(Writer writer) {
            this.writer = new PrintWriter(writer);
        }
        
        public void print(Object... objects) {
            for (int i = 0; i < objects.length; i++) {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            }
        }
        
        public void println(Object... objects) {
            print(objects);
            writer.println();
        }
        
        public void close() {
            writer.close();
        }
        
    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        FastReader in = new FastReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        BGoToJail solver = new BGoToJail();
        solver.solve(1, in, out);
        out.close();
    }
    
    static class BGoToJail {
        public void solve(int testNumber, FastReader r, OutputWriter out) {
            int n = r.nextInt();
            boolean flag = false;
            int[] d_x = new int[n];
            int[] d_y = new int[n];
            for (int i = 0; i < n; i++) {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            }
            for (int i = 0; i < n; i++) {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            }
            out.println(flag ? "Yes" : "No");
        }
        
    }
    
    static class FastReader {
        private InputStream stream;
        private byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;
        private FastReader.SpaceCharFilter filter;
        
        public FastReader(InputStream stream) {
            this.stream = stream;
        }
        
        public int read() {
            if (numChars == -1) {
                throw new InputMismatchException();
            }
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            }
            return buf[curChar++];
        }
        
        public int nextInt() {
            int c = read();
            while (isSpaceChar(c)) {
                c = read();
            }
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = read();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } while (!isSpaceChar(c));
            return res * sgn;
        }
        
        public boolean isSpaceChar(int c) {
            if (filter != null) {
                return filter.isSpaceChar(c);
            }
            return isWhitespace(c);
        }
        
        public static boolean isWhitespace(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }
        
        public interface SpaceCharFilter {
            public boolean isSpaceChar(int ch);
            
        }
        
    }
    
    static class OutputWriter {
        private final PrintWriter writer;
        
        public OutputWriter(OutputStream outputStream) {
            writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
        }
        
        public OutputWriter(Writer writer) {
            this.writer = new PrintWriter(writer);
        }
        
        public void print(Object... objects) {
            for (int i = 0; i < objects.length; i++) {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            }
        }
        
        public void println(Object... objects) {
            print(objects);
            writer.println();
        }
        
        public void close() {
            writer.close();
        }
        
    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.BufferedWriter;
import java.io.Writer;
import java.io.OutputStreamWriter;
import java.util.InputMismatchException;
import java.io.IOException;
import java.io.InputStream;

/*
 * Copyright (c) --> Arpit
 * Date Created : 19/9/2020
 * Have A Good Day !
 */

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author Arpit
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        FastReader in = new FastReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        BGoToJail solver = new BGoToJail();
        solver.solve(1, in, out);
        out.close();
    }
    
    static class BGoToJail {
        public void solve(int testNumber, FastReader r, OutputWriter out) {
            int n = r.nextInt();
            boolean flag = false;
            int[] d_x = new int[n];
            int[] d_y = new int[n];
            for (int i = 0; i < n; i++) {
                d_x[i] = r.nextInt();
                d_y[i] = r.nextInt();
            }
            for (int i = 0; i < n; i++) {
                if (d_x[i] == d_y[i] && i + 1 < n && d_x[i + 1] == d_y[i + 1] && i + 2 < n &&
                        d_x[i + 2] == d_y[i + 2]) {
                    flag = true;
                    break;
                }
            }
            out.println(flag ? "Yes" : "No");
        }
        
    }
    
    static class FastReader {
        private InputStream stream;
        private byte[] buf = new byte[1024];
        private int curChar;
        private int numChars;
        private FastReader.SpaceCharFilter filter;
        
        public FastReader(InputStream stream) {
            this.stream = stream;
        }
        
        public int read() {
            if (numChars == -1) {
                throw new InputMismatchException();
            }
            if (curChar >= numChars) {
                curChar = 0;
                try {
                    numChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (numChars <= 0) {
                    return -1;
                }
            }
            return buf[curChar++];
        }
        
        public int nextInt() {
            int c = read();
            while (isSpaceChar(c)) {
                c = read();
            }
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = read();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9') {
                    throw new InputMismatchException();
                }
                res *= 10;
                res += c - '0';
                c = read();
            } while (!isSpaceChar(c));
            return res * sgn;
        }
        
        public boolean isSpaceChar(int c) {
            if (filter != null) {
                return filter.isSpaceChar(c);
            }
            return isWhitespace(c);
        }
        
        public static boolean isWhitespace(int c) {
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }
        
        public interface SpaceCharFilter {
            public boolean isSpaceChar(int ch);
            
        }
        
    }
    
    static class OutputWriter {
        private final PrintWriter writer;
        
        public OutputWriter(OutputStream outputStream) {
            writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
        }
        
        public OutputWriter(Writer writer) {
            this.writer = new PrintWriter(writer);
        }
        
        public void print(Object... objects) {
            for (int i = 0; i < objects.length; i++) {
                writer.print(objects[i]);
                if (i != objects.length - 1) writer.print(" ");
            }
        }
        
        public void println(Object... objects) {
            print(objects);
            writer.println();
        }
        
        public void close() {
            writer.close();
        }
        
    }
}

