import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public final class Main {

	public static void main(String[] args) {
		final FastScanner fs = new FastScanner();
		final int time = fs.nextInt();
		int sameTime = 0;

		for (int i = 0; i < time; i++) {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		}
		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) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

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

        int[] readArray(int n) {
            final 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.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 final class Main {

	public static void main(String[] args) {
		final FastScanner fs = new FastScanner();
		final int time = fs.nextInt();
		int sameTime = 0;

		for (int i = 0; i < time; i++) {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		}
		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) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

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

        int[] readArray(int n) {
            final 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) {
		final FastScanner fs = new FastScanner();
		final int time = fs.nextInt();
		int sameTime = 0;

		for (int i = 0; i < time; i++) {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		}
		System.out.println("No");
	} main {
		final FastScanner fs = new FastScanner();
		final int time = fs.nextInt();
		int sameTime = 0;

		for (int i = 0; i < time; i++) {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		}
		System.out.println("No");
	} final FastScanner fs = new FastScanner(); fs new FastScanner() final int time = fs.nextInt(); time fs.nextInt() fs.nextInt fs int sameTime = 0; sameTime 0 for (int i = 0; i < time; i++) {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		} int i = 0; int i = 0; i 0 i < time i time i++ i++ i {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		} {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		} int a = fs.nextInt(); a fs.nextInt() fs.nextInt fs int b = fs.nextInt(); b fs.nextInt() fs.nextInt fs if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			} a == b a b {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} sameTime++ sameTime if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				} sameTime >= 3 sameTime 3 {
					System.out.println("Yes");
					System.exit(0);
				} System.out.println("Yes") System.out.println System.out System System.out "Yes" System.exit(0) System.exit System 0 {
				sameTime = 0;
			} sameTime = 0 sameTime 0 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) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

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

        int[] readArray(int n) {
            final 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) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } next {
            while (!st.hasMoreTokens()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } while (!st.hasMoreTokens()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            } !st.hasMoreTokens() st.hasMoreTokens() st.hasMoreTokens st {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            } try {
                    st = new StringTokenizer(br.readLine());
                } catch (IOException e) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                } catch (IOException e) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                } IOException e {
                    //noinspection CallToPrintStackTrace
                    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[] readArray(int n) {
            final int[] a = new int[n];
            for (int i = 0; i < n; i++) { a[i] = nextInt(); }
            return a;
        } readArray {
            final int[] a = new int[n];
            for (int i = 0; i < n; i++) { a[i] = nextInt(); }
            return a;
        } final 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] = 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 final class Main {

	public static void main(String[] args) {
		final FastScanner fs = new FastScanner();
		final int time = fs.nextInt();
		int sameTime = 0;

		for (int i = 0; i < time; i++) {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		}
		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) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

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

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

        long nextLong() {
            return Long.parseLong(next());
        }
    }
} public final class Main {

	public static void main(String[] args) {
		final FastScanner fs = new FastScanner();
		final int time = fs.nextInt();
		int sameTime = 0;

		for (int i = 0; i < time; i++) {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		}
		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) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

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

        int[] readArray(int n) {
            final 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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public final class Main {

	public static void main(String[] args) {
		final FastScanner fs = new FastScanner();
		final int time = fs.nextInt();
		int sameTime = 0;

		for (int i = 0; i < time; i++) {
			int a = fs.nextInt();
			int b = fs.nextInt();
			//System.out.println("a=" + a + "b=" + b);
			if (a == b) {
				sameTime++;
				if (sameTime >= 3) {
					System.out.println("Yes");
					System.exit(0);
				}

			} else {
				sameTime = 0;
			}
		}
		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) {
                    //noinspection CallToPrintStackTrace
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

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

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

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