INTEST - Enormous Input Test

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The purpose of this problem is to verify whether the method you are using to read input data is sufficiently fast to handle problems branded with the enormous Input/Output warning. You are expected to be able to process at least 2.5MB of input data per second at runtime.


The input begins with two positive integers n k (n, k<=107). The next n lines of input contain one positive integer ti, not greater than 109, each.


Write a single integer to output, denoting how many integers ti are divisible by k.


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Rafael da Silva Carrasco: 2011-04-19 23:47:37

Didn't like this one... It's not about coding skills, but about which functions are faster.

osb: 2011-04-01 15:25:26

How to quick read data In c++;
Use cin, cout;
I'm using 9.32 second
ios::sync_with_stdio(false); command line used.

YatsukoYin: 2010-06-27 15:25:14

Hi all!
Who can I speed up data reading in C#, like this
" David " ?
Thanks a lot!

Daniel Macintyre: 2010-06-14 16:46:31

I got it! I was using iostream data inputs and outputs before. When I switched to stdio.h methods it worked!

Burdakov Daniel: 2010-04-21 16:30:37

It seems that input is 25Mb, not 2.5Mb)

My prog with length of buffer 2.6Mb fails, but with 26Mb accepted.

Jorat: 2010-02-27 20:22:54

>sankalp srivastava
Are you sure?

vivek: 2010-02-09 18:37:20

this problem has to be divided into three steps , firstly how to store large numbers , then perform mathematical operations upon them
so first store it in a character string
then for the modulus operator one has to apply a function

Added by:adrian
Time limit:2.112s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: NODEJS PERL6 VB.NET
Resource:Idea put forward by Michael Mendelsohn