Problem:
Score: 300 points

Problem Statement

M-kun is a student in Aoki High School, where a year is divided into N terms.

There is an exam at the end of each term. According to the scores in those exams, a student is given a grade for each term, as follows:

For the first through (K-1)-th terms: not given.

For each of the K-th through N-th terms: the multiplication of the scores in the last K exams, including the exam in the graded term.

M-kun scored A_i in the exam at the end of the i-th term.

For each i such that K+1 \leq i \leq N, determine whether his grade for the i-th term is strictly greater than the grade for the (i-1)-th term.

Constraints

2 \leq N \leq 200000

1 \leq K \leq N-1

1 \leq A_i \leq 10^{9}

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N K
A_1 A_2 A_3 \ldots A_N

Output

Print the answer in N-K lines.

The i-th line should contain Yes if the grade for the (K+i)-th term is greater than the grade for the (K+i-1)-th term, and No otherwise.

Sample Input 1

5 3
96 98 95 100 20

Sample Output 1

Yes
No

His grade for each term is computed as follows:

3-rd term: (96 \times 98 \times 95) = 893760

4-th term: (98 \times 95 \times 100) = 931000

5-th term: (95 \times 100 \times 20) = 190000

Sample Input 2

3 2
1001 869120 1001

Sample Output 2

No

Note that the output should be No if the grade for the 3-rd term is equal to the grade for the 2-nd term.

Sample Input 3

15 7
3 1 4 1 5 9 2 6 5 3 5 8 9 7 9

Sample Output 3

Yes
Yes
No
Yes
Yes
No
Yes
Yes

Solution in Java (OpenJDK 11.0.6) (judge verdict: Wrong Answer)

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		
	      Scanner sc = new Scanner(System.in);
	      int N = sc.nextInt();
	      int K = sc.nextInt(); 
	      List<Integer> scoreList = new ArrayList<>();
	      List<Integer> hyouteiList = new ArrayList<>();
	      
	      for(int i = 0; i < N; i++) {
	    	  scoreList.add(sc.nextInt());
	      }
	      
	      for(int i = K; i <= N; i++) {
	    	  int sum = 1;
	    	  for(int j = 0; j < K; j++) {
	    		  sum *= scoreList.get(i - K + j);
	    	  }
	    	  hyouteiList.add(sum);
	      }
	      
	      boolean ans = (hyouteiList.size() == new HashSet<>(hyouteiList).size());
	      
	      
	      for(int i = 0; i < N - K; i++) {
	    	  if(ans) {
	    		  System.out.println("No");
	    	  }else if(hyouteiList.get(i + 1) - hyouteiList.get(i) > 0) {
	    		  System.out.println("Yes");
	    	  }else {
	    		  System.out.println("No");
	    	  }
	      }

	      
	}

}