Marks

AtCoder

IDm_solutions2020_c

Time2000ms

Memory256MB

Difficulty—

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: $N$ $K$ $A_1$ $A_2$ $A_3$ $\ldots$ $A_N$ [samples]

Samples

Input #1

5 3
96 98 95 100 20

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: $(95 \times 100 \times 20) = 190000$

Input #2

3 2
1001 869120 1001

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.

Input #3

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

Output #3

Yes
Yes
No
Yes
Yes
No
Yes
Yes

API Response (JSON)

{
  "problem": {
    "name": "Marks",
    "description": {
      "content": "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 ",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "m_solutions2020_c"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "M-kun is a student in Aoki High School, where a year is divided into $N$ terms.  \nThere is an exam at the end of each term. According to the scores in those exams, a student is given a grade for each ...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments