Iranian Combinatorics Olympiad
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Iranian Combinatorics Olympiad (ICO) is an annual competition focusing on high-quality problems related to combinatorics. Its purpose is to help students getting familiar with combinatorics as a creative, broad, and enjoyable topic, in a fun and adventurous manner as well as allowing them to compete with students from other countries and all the combinatorics lovers.

ICO is the first competition in the field of combinatorics, which includes online scoring and ranking. Participation is open to anyone interested in mathematics or computer science, from high school or any other educations.
Iranian Combinatorics Olympiad


"Combinatorics is an area of mathematics primarily concerned with counting, both as a means and an end in obtaining results, and certain properties of finite structures."

Combinatorics is one of the important areas of mathematics. Its history goes back to the ancient world when the ancient Indians and Greeks solved problems using basic concepts of combinatorics. From the 20th century, combinatorics experienced rapid growth along with computer science. It includes many other subfields, like graph theory, probabilities, etc. Nowadays, there are many applications for combinatorics, ranging from logic to evolutionary biology.

Combinatorics problems are generally known to be easily understandable with little knowledge of mathematics, while it may be so hard to solve some of them. So improving combinatorics skills involves creativity and the ability to reasoning. Iranian Combinatorics Olympiad (ICO) provides a great opportunity for students to compete and challenge their skills to solve combinatorics problems.


Alireza Alipour
Head of Scientific Committee
Abolfazl Asadi
Head of the Executive Committee
Morteza Saghafian
Chairman of ICO
Seyed Reza Hosseini
Director of ICO