## 10910 - Marks Distribution

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can anyone tell me what input will let it wrong

Try
Code: Select all
`134 70 1`

Correct output: 18204270

is it over flower for long long int ?

The first factorial that can't fit in a long long is 21! = 2^65.47...
mf
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thanks to "mf" a lot

i have got ac
lucky16g
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### Re: 10910 - Marks Distribution

It's simple, just like Binomial Showdown(530)

You have t-n*p extra marks, and you have to distribute them among n subjects. That means you have t-n*p marks, and you should put n-1 'separators' to divide them into n pieces. Imagine marks as 0's and separators as 1's. Now the problem is: How many different binary numbers can be formed with n-1 1's and t-n*p 0's ? The answer is (t-n*p+n-1)!/{(t-n*p)!(t-n*p)!), simply C(t-n*p+n-1, t-n*p), or C(t-n*p+n-1, n-1).

Just build a Pascal's triangle with 75 rows, then go!

P.S. Big integer may be needed.
bonny
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### Re: 10910 - Marks Distribution

Got WA only for big int
in the problem why this is given ???
"You may assume that the final answer will fit in a standard 32-bit integer."
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### Re: 10910 - Marks Distribution

As far as I remember, I got this problem AC without using bigint.

sohel
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### Re: 10910 - Marks Distribution

i got wa in this code,but when i switched to java ,in same process i got ac
this is the wa code
Code: Select all
`code removed...`
Last edited by Jehad Uddin on Mon Sep 13, 2010 10:13 am, edited 1 time in total.
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### Re: 10910 - Marks Distribution

I just submitted your code and it gets ACed.

sohel
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### Re: 10910 - Marks Distribution

"You may assume that the final answer will fit in a standard 32-bit integer." Is it true??!!
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### Re: 10910 - Marks Distribution

Yes, it is.

sohel
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### Re: 10910 - Marks Distribution

Yeah... Now I know that. Accepted!!!

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### Re: 10910 - Marks Distribution

I use unsigned int to get accepted. Although my first A.C. solution set -1 to an unsigned int , it still get accepted
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