2 test cases not passing MARBLES problem

#1
#2

Hi @utsavjn48

Your code is failing on very large inputs where the answer exceeds the size of unsigned long long. Instead you can use a loop traversing from i = n-1 down to n-k+1 and in a single traversal you multiply ans with i and divide ans by (n-i). Hence you will finally get (n-1)C(k-1).

Hope it Helps.

#3

@utsavjn48
Please mark your doubt as solved.

#4

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