round 1 questions of CodeVita 2017 Season VI(zone 3)

Does anyone here have the round 1 questions of CodeVita 2017 season VI (zone 3)? If yes then please do share. The round was conducted between 3:00 pm 28 July 2017 and 3:00 pm 29 July 2017.

Here are TCS CodeVita 2017 Round 1 Questions :- http://virtualoops.com/tcs-codevita-2017-round-1-questions/

1 Like

Problem : Mountain peak sequence
Consider the first three natural numbers 1, 2, 3. These can be arranged in the following ways: 2, 3, 1 and 1, 3, 2. Inboth of these
arrangements, the numbers increase to a certain point and then decrease. A sequence with this property is called a “mountain
peak sequence”.
Given an integer N, write a program to find the remainder of mountain peak arrangements that can be obtained by rearranging the
numbers 1, 2, …, N.
Notifications
Status messages
Input Format:
One line containing the integer N
Output Format:
An integer m, giving the remainder of the number of mountain peak arrangements that could be obtained from 1, 2, …, N is divide
by Mod
Constraints:
Mod = 10 9 +7
N ≤ 10 9
Example 1
Input
3
Output
2
Explanation
There are two such arrangements: 1, 3, 2 and 2, 3, 1
Example 2
Input
4
Output
6
Explanation
The six arrangements are (1, 2, 4, 3), (1,3,4,2), (1,4,3,2), (2,3,4,1), (2,4,3,1), (3,4,2,1)
Note:
Please do not use package and namespace in your code. For object oriented languages your code should be written in one class.
Note:
Participants submitting solutions in C language should not use functions from <conio.h> / <process.h> as these files do not exist
in gcc
Note:
For C and C++, return type of main() function should be int.

Here is the link to my drive.
https://drive.google.com/open?id=0B6JEvMco0pOEdmRLS19ZalR6ZDg
You can find solution of some of the questions which I attempted.
Thank you.

1 Like
//