import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] d1 = new int[n];
        int[] d2 = new int[n];
        for (int i = 0; i < n; i++) {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        }
        int count = 0;
        for (int i = 0; i < n; i++) {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        }
        System.out.println("No");
    }
} 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();
        int[] d1 = new int[n];
        int[] d2 = new int[n];
        for (int i = 0; i < n; i++) {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        }
        int count = 0;
        for (int i = 0; i < n; i++) {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        }
        System.out.println("No");
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] d1 = new int[n];
        int[] d2 = new int[n];
        for (int i = 0; i < n; i++) {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        }
        int count = 0;
        for (int i = 0; i < n; i++) {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        }
        System.out.println("No");
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] d1 = new int[n];
        int[] d2 = new int[n];
        for (int i = 0; i < n; i++) {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        }
        int count = 0;
        for (int i = 0; i < n; i++) {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        }
        System.out.println("No");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int[] d1 = new int[n]; d1 new int[n] n int[] d2 = new int[n]; d2 new int[n] n for (int i = 0; i < n; i++) {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        } {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        } d1[i] = sc.nextInt() d1[i] d1 i sc.nextInt() sc.nextInt sc d2[i] = sc.nextInt() d2[i] d2 i sc.nextInt() sc.nextInt sc int count = 0; count 0 for (int i = 0; i < n; i++) {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        } {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        } if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            } d1[i] == d2[i] d1[i] d1 i d2[i] d2 i {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } count++ count if(count > 2) {
                    System.out.println("Yes");
                    return;
                } count > 2 count 2 {
                    System.out.println("Yes");
                    return;
                } System.out.println("Yes") System.out.println System.out System System.out "Yes" return; {
                count = 0;
            } count = 0 count 0 System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] d1 = new int[n];
        int[] d2 = new int[n];
        for (int i = 0; i < n; i++) {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        }
        int count = 0;
        for (int i = 0; i < n; i++) {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        }
        System.out.println("No");
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] d1 = new int[n];
        int[] d2 = new int[n];
        for (int i = 0; i < n; i++) {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        }
        int count = 0;
        for (int i = 0; i < n; i++) {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        }
        System.out.println("No");
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int[] d1 = new int[n];
        int[] d2 = new int[n];
        for (int i = 0; i < n; i++) {
            d1[i] = sc.nextInt();
            d2[i] = sc.nextInt();
        }
        int count = 0;
        for (int i = 0; i < n; i++) {
            if(d1[i] == d2[i]) {
                count++;
                if(count > 2) {
                    System.out.println("Yes");
                    return;
                }
            } else {
                count = 0;
            }
        }
        System.out.println("No");
    }
}