Hello everyone! A couple of changes have been to the world cups.

In terms of IChOO, the deadline has been extended by 24 hours due to popular request. A new countdown timer can be found **here**. Good luck, and don't forget to submit this time!

In terms of IPhOO, the problem PDF has been released on **our website** and you will have *three weeks* to work on the problems, not two. The reason for this is that it was pointed out to us that the first two weeks of the World Cup clash with olympiads like the IMO and IPhO. Three weeks should be plenty; enjoy!

No vote yet

1 vote

×

Problem Loading...

Note Loading...

Set Loading...

Easy Math Editor

`*italics*`

or`_italics_`

italics`**bold**`

or`__bold__`

boldNote: you must add a full line of space before and after lists for them to show up correctlyparagraph 1

paragraph 2

`[example link](https://brilliant.org)`

`> This is a quote`

Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.`2 \times 3`

`2^{34}`

`a_{i-1}`

`\frac{2}{3}`

`\sqrt{2}`

`\sum_{i=1}^3`

`\sin \theta`

`\boxed{123}`

## Comments

Sort by:

TopNewest@Ahaan Rungta how to submit via form ? I mean where is that on the site ? And how to format my math there ?

Log in to reply

As mentioned in the PDF and on the website, submit via e-mail.

Log in to reply