import java.util.Scanner;

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