Problem:
Score : 200 points

Problem Statement

Tak performed the following action N times: rolling two dice.
The result of the i-th roll is D_{i,1} and D_{i,2}.

Check if doublets occurred at least three times in a row.
Specifically, check if there exists at lease one i such that D_{i,1}=D_{i,2}, D_{i+1,1}=D_{i+1,2} and D_{i+2,1}=D_{i+2,2} hold.

Constraints

3 \leq N \leq 100

1\leq D_{i,j} \leq 6

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N
D_{1,1} D_{1,2}
\vdots
D_{N,1} D_{N,2}

Output

Print Yes if doublets occurred at least three times in a row. Print No otherwise.

Sample Input 1

5
1 2
6 6
4 4
3 3
3 2

Sample Output 1

Yes

From the second roll to the fourth roll, three doublets occurred in a row.

Sample Input 2

5
1 1
2 2
3 4
5 5
6 6

Sample Output 2

No

Sample Input 3

6
1 1
2 2
3 3
4 4
5 5
6 6

Sample Output 3

Yes

Solution in Java (OpenJDK 11.0.6) (judge verdict: Accepted)

import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    String str_scan = scan.nextLine();
    // int型へ変換
    var N = Integer.parseInt(str_scan);

    String[] D = new String[N];

    for(var j=0;j < N;j++){
      D[j] = scan.nextLine();
    }

    int zoro = 0;
    var ans = "No";
    String[] DiceLine = new String[2];

    for (var i=0;i < N;i++){
      DiceLine = D[i].split(" ");
      if (DiceLine[0].equals(DiceLine[1])){
        zoro++;
      }else{
        zoro = 0;
      }

      if(zoro == 3){
        ans = "Yes";
      }
    }

    System.out.println(ans);
    scan.close();
  }
}