PC2021: Intermediate results, Problem 5, week 6

By 16th May 2021, there are 1061 registered participants from 71 countries (the list of countries is given below). During the first five weeks, 18 solutions were submitted, out of which six were correct

Correct solutions were submitted by:

First NameSurnameCountrySchool/Universitydatetime
NikitaSemeninRussiaMoscow Institute of Physics and Technology26/04/202120:39
ZheningLiCanadaSir John A. Macdonald Secondary School02/05/202114:07
HuiyuanWangChinaUniversity of Cambridge02/05/202117:07
KyleBomeislUnited StatesRutgers University02/06/202111:07
Vlad-ȘtefanOrosRomania“Grigore Moisil” Informatics High School03/06/202109:31

Participating countries: Algeria, Azerbaijan, Australia, Bangladesh, Belarus, Belgium, Bosnia and Herzegovina, Bolivia, Brazil, Bulgaria, Cambodia, Canada, China, Croatia, Czechia, Egypt, El Salvador, Estonia, Finland, Georgia, Germany, Greece, Hungary, India, Indonesia, Iran, Israel, Italy, Japan, Kazakhstan, Kenya, Korea, Kyrgyzstan, Latvia, Lebanon, Lithuania, Macedonia, Malaysia, Mexico, Moldova, Mongolia, Nepal, Nigeria, North Macedonia, Pakistan, Peru, Philippines, Poland, Romania, Russia, Saudi Arabia, Serbia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Thailand, Turkey, Turkmenistan, United Arab Emirates, United Kingdom, United States, Uzbekistan, Vietnam.