import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int counts = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    }
    if (counts == 3) {
      System.out.println("Yes");
    } else {
      System.out.println("No");
    }
  }
} import java.util.*; util.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int counts = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    }
    if (counts == 3) {
      System.out.println("Yes");
    } else {
      System.out.println("No");
    }
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int counts = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    }
    if (counts == 3) {
      System.out.println("Yes");
    } else {
      System.out.println("No");
    }
  } main {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int counts = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    }
    if (counts == 3) {
      System.out.println("Yes");
    } else {
      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 counts = 0; counts 0 for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    } {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    } int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      } a == b a b {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } counts += 1 counts 1 if (counts == 3) {
          break;
        } counts == 3 counts 3 {
          break;
        } break; {
        counts = 0;
      } counts = 0 counts 0 if (counts == 3) {
      System.out.println("Yes");
    } else {
      System.out.println("No");
    } counts == 3 counts 3 {
      System.out.println("Yes");
    } System.out.println("Yes") System.out.println System.out System System.out "Yes" {
      System.out.println("No");
    } 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 counts = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    }
    if (counts == 3) {
      System.out.println("Yes");
    } else {
      System.out.println("No");
    }
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int counts = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    }
    if (counts == 3) {
      System.out.println("Yes");
    } else {
      System.out.println("No");
    }
  }
} Main
import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int counts = 0;
    for (int i = 0; i < N; i++) {
      int a = sc.nextInt();
      int b = sc.nextInt();
      if (a == b) {
        counts += 1;
        if (counts == 3) {
          break;
        }
      } else {
        counts = 0;
      }
    }
    if (counts == 3) {
      System.out.println("Yes");
    } else {
      System.out.println("No");
    }
  }
}
