import java.util.Scanner;

//atcoderはScannerクラスのsc.next()で行ける
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int flagcnt = 0;
        boolean flag = false;
        for (int i = 0; i < n; i++) {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        }
        if (flag) {
            System.out.println("Yes");
        } else {
            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 flagcnt = 0;
        boolean flag = false;
        for (int i = 0; i < n; i++) {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        }
        if (flag) {
            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 flagcnt = 0;
        boolean flag = false;
        for (int i = 0; i < n; i++) {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        }
        if (flag) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }


    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int flagcnt = 0;
        boolean flag = false;
        for (int i = 0; i < n; i++) {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        }
        if (flag) {
            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 flagcnt = 0; flagcnt 0 boolean flag = false; flag false for (int i = 0; i < n; i++) {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        } {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        } int i1 = sc.nextInt(); i1 sc.nextInt() sc.nextInt sc int i2 = sc.nextInt(); i2 sc.nextInt() sc.nextInt sc if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            } i1 == i2 i1 i2 {
                flagcnt += 1;
            } flagcnt += 1 flagcnt 1 {
                flagcnt = 0;
            } flagcnt = 0 flagcnt 0 if (flagcnt > 2) {
                flag = true;
                break;
            } flagcnt > 2 flagcnt 2 {
                flag = true;
                break;
            } flag = true flag true break; if (flag) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } flag {
            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 flagcnt = 0;
        boolean flag = false;
        for (int i = 0; i < n; i++) {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        }
        if (flag) {
            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 flagcnt = 0;
        boolean flag = false;
        for (int i = 0; i < n; i++) {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        }
        if (flag) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }


    }
} Main
import java.util.Scanner;

//atcoderはScannerクラスのsc.next()で行ける
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int flagcnt = 0;
        boolean flag = false;
        for (int i = 0; i < n; i++) {
            int i1 = sc.nextInt();
            int i2 = sc.nextInt();
            if (i1 == i2) {
                flagcnt += 1;
            } else {
                flagcnt = 0;
            }
            if (flagcnt > 2) {
                flag = true;
                break;
            }
        }
        if (flag) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }


    }
}