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