Start of the first round

First round will last until the 15th of Novem­ber. All the inform­a­tion for par­ti­cip­a­tion you can find here.

Prob­lems in English

• Prob­lems for juni­or participants
• Prob­lems for seuni­or participants

Prob­lems in Spanish

• Prob­lems for juni­or participants
• Prob­lems for seni­or participants