import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String result = "No";
        int zoroCount = 0;
        for (int i = 0; i < n; i++) {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        }
        System.out.println(result);

    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String result = "No";
        int zoroCount = 0;
        for (int i = 0; i < n; i++) {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        }
        System.out.println(result);

    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String result = "No";
        int zoroCount = 0;
        for (int i = 0; i < n; i++) {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        }
        System.out.println(result);

    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String result = "No";
        int zoroCount = 0;
        for (int i = 0; i < n; i++) {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        }
        System.out.println(result);

    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc String result = "No"; result "No" int zoroCount = 0; zoroCount 0 for (int i = 0; i < n; i++) {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        } {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        } int d1 = sc.nextInt(); d1 sc.nextInt() sc.nextInt sc int d2 = sc.nextInt(); d2 sc.nextInt() sc.nextInt sc if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            } d1 == d2 d1 d2 {
                zoroCount++;
            } zoroCount++ zoroCount {
                zoroCount = 0;
            } zoroCount = 0 zoroCount 0 if (zoroCount >= 3) {
                result = "Yes";
            } zoroCount >= 3 zoroCount 3 {
                result = "Yes";
            } result = "Yes" result "Yes" System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String result = "No";
        int zoroCount = 0;
        for (int i = 0; i < n; i++) {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        }
        System.out.println(result);

    }
} public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String result = "No";
        int zoroCount = 0;
        for (int i = 0; i < n; i++) {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        }
        System.out.println(result);

    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        String result = "No";
        int zoroCount = 0;
        for (int i = 0; i < n; i++) {
            int d1 = sc.nextInt();
            int d2 = sc.nextInt();
            if (d1 == d2) {
                zoroCount++;
            } else {
                zoroCount = 0;
            }
            if (zoroCount >= 3) {
                result = "Yes";
            }

        }
        System.out.println(result);

    }
}