Upload code_segments/segment_148.txt with huggingface_hub
Browse files
code_segments/segment_148.txt
ADDED
|
@@ -0,0 +1,27 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
You are given $n$ sticks, numbered from $1$ to $n$. The length of the $i$-th stick is $a_i$.
|
| 2 |
+
|
| 3 |
+
You need to answer $q$ queries. In each query, you are given two integers $l$ and $r$ ($1 \le l < r \le n$, $r - l + 1 \ge 6$). Determine whether it is possible to choose $6$ distinct sticks from the sticks numbered $l$ to $r$, to form $2$ non-degenerate triangles$^{\text{∗}}$.
|
| 4 |
+
|
| 5 |
+
$^{\text{∗}}$A triangle with side lengths $a$, $b$, and $c$ is called non-degenerate if:
|
| 6 |
+
|
| 7 |
+
* $a < b + c$, * $b < a + c$, and * $c < a + b$.
|
| 8 |
+
|
| 9 |
+
The first line contains two integers $n$ and $q$ ($6 \le n \le 10^5$, $1 \le q \le 10^5$) — the number of sticks and the number of queries respectively.
|
| 10 |
+
|
| 11 |
+
The second line contains $n$ integers $a_1, a_2, \ldots, a_n$ ($1 \le a_i \le 10^9$) — $a_i$ denotes the length of the $i$-th stick.
|
| 12 |
+
|
| 13 |
+
Each of the following $q$ lines contains two integers $l$ and $r$ ($1 \le l < r \le n$, $r - l + 1 \ge 6$) — the parameters of each query.
|
| 14 |
+
|
| 15 |
+
For each query, output "YES" (without quotes) if it is possible to form $2$ triangles, and "NO" (without quotes) otherwise.
|
| 16 |
+
|
| 17 |
+
You can output the answer in any case (upper or lower). For example, the strings "yEs", "yes", "Yes", and "YES" will be recognized as positive responses.
|
| 18 |
+
|
| 19 |
+
In the first query, the lengths of the sticks are $[5, 2, 2, 10, 4, 10]$. Two sets of sticks $[2, 4, 5]$ and $[2, 10, 10]$ can be selected to form $2$ non-degenerate triangles.
|
| 20 |
+
|
| 21 |
+
In the second query, the lengths of the sticks are $[2, 2, 10, 4, 10, 6]$. It can be shown that it is impossible to form $2$ non-degenerate triangles.
|
| 22 |
+
|
| 23 |
+
In the third query, the lengths of the sticks are $[2, 2, 10, 4, 10, 6, 1]$. Two sets of sticks $[1, 2, 2]$ and $[4, 10, 10]$ can be selected to form $2$ non-degenerate triangles.
|
| 24 |
+
|
| 25 |
+
In the fourth query, the lengths of the sticks are $[4, 10, 6, 1, 5, 3]$. It can be shown that it is impossible to form $2$ non-degenerate triangles.
|
| 26 |
+
|
| 27 |
+
In the fifth query, the lengths of the sticks are $[10, 4, 10, 6, 1, 5, 3]$. Two sets of sticks $[1, 10, 10]$ and $[3, 4, 5]$ can be selected to f
|