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 C (GCC 9.2.1) (judge verdict: Wrong Answer)

#include<stdio.h>
typedef long long ll;
ll a[300000];
ll ans = -1;
ll totalpoint(ll n,ll k){
    ll i,ans;
    if(ans = -1){
        ans = 1;
        for(i=n-k+1;i<=n;i++){
            ans = ans*a[i];
        }
    }else{
        ans = ans/a[n-k];
        ans = ans*a[n];
    }
    return ans;
}
int main(){
    ll N,K;
    ll i;
    scanf("%lld%lld",&N,&K);
    for(i=1;i<=N;i++){
        scanf("%lld",&a[i]);
    }
    for(i = K+1;i<=N;i++){
        if(totalpoint(i-1,K)<totalpoint(i,K)){
            printf("Yes");
        }else{
            printf("No");
        }
        printf("\n");
    }
    return 0;
}