Top 20

1 0x00h 699 pts
2 boris39 699 pts
3 neoxquick 680 pts
4 maf-ia 661 pts
5 thefinder 643 pts
6 benito255 607 pts
7 mego 590 pts
8 madbat2 580 pts
9 Mart 552 pts
10 Stupefy 532 pts
11 nikokks 511 pts
12 tehron 503 pts
13 Kithyane 501 pts
14 plucth 479 pts
15 egosum 472 pts
16 CoYoTe99 415 pts
17 Undr 414 pts
18 Zeta 414 pts
19 loonies2 410 pts
20 Armavica 408 pts

Full ranking


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.

26 Feb - 5:54 pm

contest 22 is not concerned by the issue I found, and seems to be working (I suppose you don't have 500 error on this one ?). Your solutions are indeed rejected, but I did not check them yet

26 Feb - 3:25 pm

The validation for contest 22 also seems to be wrong (it's not accepting solutions that are clearly correct). I submitted bug report yesterday.

26 Feb - 9:59 am

Ok I fixed the issue It is higly possible that other challenges are impacted, so don't hesitate to tell meif you encounter this again. Thank you for reporting

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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