Top 20

1 0x00h 697 pts
2 boris39 697 pts
3 neoxquick 678 pts
4 maf-ia 660 pts
5 thefinder 640 pts
6 benito255 605 pts
7 mego 589 pts
8 madbat2 580 pts
9 plucth 561 pts
10 Mart 551 pts
11 eax 550 pts
12 nikokks 546 pts
13 Stupefy 530 pts
14 tehron 503 pts
15 Kithyane 498 pts
16 egosum 471 pts
17 CoYoTe99 415 pts
18 Undr 413 pts
19 Zeta 413 pts
20 Armavica 408 pts

Full ranking


25 May - 12:07 pm


9 Apr - 2:10 pm

Yeah this email challenge is a pain in the ***. Sorry about that, we might even remove it in the future, i will see if we find time to fix it

2 Apr - 7:03 am

The Email challenge (#21) appears to be broken again. No mail is being received. Tried with multiple mail services to no avail.

12 May - 11:47 am

Working again now.

10 May - 4:05 pm

Hello, sorry for the late answer, in fact yes there is an issue with the mail, we will try to fix it quickly. Thanks for reporting

7 May - 6:07 pm

Hi there is a issue for the challenfe Email (number 21). I don't receive a mail on any of them: gmail, hotmail, yahoo. do i fail or is it the challenge ?

28 Feb - 10:35 am

Yes we fixed it

27 Feb - 10:00 pm

Thank you, just validated contest22. The solution checker seems to have been fixed.

27 Feb - 8:40 am

Yes several solutions are accepted of course. I will check one of your answers

26 Feb - 7:51 pm

No 500 error, but the solutions I'm submitting can be verified to be correct. It can't be that only one configuration is accepted, right? - as there are multiple correct configurations for each problem.

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Contests list :: Network :: HTTP (15)


ID : 15
Points : 8
Validations :
Challenge page
Report a bug


The goal of this challenge is to get you accustomed to the HTTP protocol (if it is not the case yet).
You have to connect to in your program and get the following page :

You have to pass the value contained in the variable x to the page nombre.php by adding ?x=77 after nombre.php in the URL. Here, 77 is an example, you must put the value contained in x.

For instance, if x = 250, you must get the page :
By visiting this page, you obtain a real number, that depends on the value of x. You must send back this number in the variable y to complete the contest.
In the case of the example (x = 250), you have to send y = 767.48196232174.
You have 3 secondes.

Note :
The library does not contain any function helping you to connect to nombre.php. It is your job to code the function of connection (otherwise, the challenge has no point !).


Name Type Description
Variables to get
xIntegerintInteger to pass to the page, as described previously
Variables to send back
yRealfloatReal displayed on