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The coding Challenges @ Dcoder

By Lochard | Asylum Diary | 29 May 2023

Title: The coding Challenges

Problem: There are n participants appearing for one on one coding challenge.Each participant plays twice (challenges) with each of his opponents.You need to compute the total number of challenges. 

Input: First line contains an integer n, represent number of participants.

Output: Print the total number of challenges.

Constraints: 1≤n≤100

Sample Input: 16

Sample Output: 


from operator import mul
from functools import reduce
n= int(input())
if n > 2:
  print(reduce(mul, range(1, n+1)) // reduce(mul, range(1, n-1)))
  print(n // 2)

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