After a demanding morning of competition, we prepared a variety of activities to help the contestants relax and recharge. Some got moving with sports activities, others tested their skills in a marble run challenge, visited the Celje Regional Museum, the second-oldest...
Welcome to the 20th Middle European Mathematical Olympiad 2026!
Celje, SlovenijaSource: archive MOC
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An Afternoon to Relax and Recharge
The First Part of the Competition Is Over
After a demanding morning, the contestants will spend the afternoon relaxing, enjoying sports and a variety of leisure activities. Tomorrow, they will face another five hours of solving Olympiad-style problems as a team. Photo: Deja Dernovšek, Neli...
Contestants discover a love story at Celje Castle on the eve of the competition
We spent the first afternoon in a relaxed atmosphere. After some free time, the contestants headed to Celje Castle, whose origins date back to the first half of the 12th century. The castle was once home to the Counts of Celje, the most influential noble dynasty in...
We have officially opened the 20th Middle European Mathematical Olympiad
At the opening ceremony, all 10 teams, 60 contestants and their official team mascots were introduced. The participants were welcomed by Luka Horjak, President of the MEMO Organising Committee, and the host, Mojmir Klovar, Director of Šolski center Celje. Ahead of...
The Contestants Have Arrived in Celje!
We are delighted to have you here and hope you enjoy your stay with us. The days ahead will be filled with mathematical challenges, new friendships, and memorable experiences. We wish you every success in the competition and, above all, an enjoyable stay in Celje and...
Address of the mayor of Celje
Dear participants, dear mentors, dear organisers, The city of Celje is proud to support the MEMO competition, which brings together young people with exceptional knowledge, analytical thinking, and research curiosity. Such competitions are especially important, as...
About MEMO
The 20th MEMO will be held in Celje, Slovenia, from 23th to 29th August 2026.
The Middle European Mathematical Olympiad (MEMO) is the continuation of Austrian-Polish Mathematical Competition (APMC), held 29 times from 1978 to 2006. Now ten countries participate in the MEMO: Austria, Croatia, Czechia, Germany, Hungary, Lithuania, Poland, Slovakia, Slovenia and Switzerland.
Similar to the IMO, each country participates with at most six students and two team leaders. At a meeting of representatives of MEMO countries held in 2006 during the IMO it was pointed out that one of the goals of the new competition was to enable a larger number of students to gain experience in international competitions. Therefore, the teams participating in the MEMO are typically disjoint from the IMO teams. Also, in order for MEMO to help younger students prepare for some future International Mathematical Olympiad, students in their senior year are not eligible to be in the MEMO team.
The most important part of the MEMO are the individual and team competition, each lasting five hours. The problems are of the “olympic” type, typically divided into four areas: algebra, combinatorics, geometry and number theory. At the individual competition the students solve one problem from each area. The team competition test consists of eight problems, two from each area (although at the first two MEMOs the team competition also had only four problems). In the team competition the students solve the problems together, which gives the competition a very special atmosphere. The team part of the competition existed also at the APMC, but it is otherwise a rarity in mathematical competitions.
The whole program lasts for one week. Besides the individual and team competition, it contains excursions, entertainment and sports activities.
About a hundred participants are expected, including 60 contestants and 20 team leaders and deputies. The main organiser of the 20th MEMO is The Society of Mathematicians, Physicists and Astronomers of Slovenia.