Qingshan recommends that she and her companion Daniel go climbing. Shockingly, they are occupied secondary school understudies, so they can just go climbing on scratch paper.    A stage p is composed from left to directly on the paper. First Qingshan picks an integer list x (1≤x≤n) and tells it to Daniel. From that point onward, Daniel picks

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
icon
Related questions
Question

Correct answer will be upvoted else downvoted. Computer science.

 

 Qingshan recommends that she and her companion Daniel go climbing. Shockingly, they are occupied secondary school understudies, so they can just go climbing on scratch paper. 

 

A stage p is composed from left to directly on the paper. First Qingshan picks an integer list x (1≤x≤n) and tells it to Daniel. From that point onward, Daniel picks another integer file y (1≤y≤n, y≠x). 

 

The game advances turn by turn and of course, Qingshan moves first. The principles follow: 

 

In case it is Qingshan's move, Qingshan should change x to such a record x′ that 1≤x′≤n, |x′−x|=1, x′≠y, and px′<px simultaneously. 

 

In case it is Daniel's move, Daniel should change y to such a record y′ that 1≤y′≤n, |y′−y|=1, y′≠x, and py′>py simultaneously. 

 

The individual who can't take her or his action loses, and different successes. You, as Qingshan's fan, are approached to compute the number of conceivable x to make Qingshan win for the situation the two players play ideally. 

 

Input 

 

The primary line contains a solitary integer n (2≤n≤105) — the length of the change. 

 

The subsequent line contains n unmistakable integers p1,p2,… ,pn (1≤pi≤n) — the change. 

 

Output 

 

Print the number of potential upsides of x that Qingshan can decide to make her success.

 

 

Expert Solution
steps

Step by step

Solved in 3 steps with 1 images

Blurred answer
Knowledge Booster
Polynomial time
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education