Not able to find the problem with my code

#1

code link: https://ide.codingblocks.com/s/175562

#2

Virat is learning to calculate nCr. Dhoni gave him some n and r values to solve for nCr. As the result can be large, he asked him to print (nCr % 1000000007).

#3

Hey @siddharth9k9 there were couple of problems with your code,

  1. while calculating answer you need to pass factorial of r and n-r to fastexpo instead of r and n-r
  2. (a*b)%mod = (a%mod * b%mod)%mod, but you were just doing (a%mod * b%mod)
    Here is your code with rectifications : https://ide.codingblocks.com/s/175587
    i have also added comments in the lines where i made changes.
#4

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