PC2021: Intermediate results, Problem 2, week 1

By 7th February 2021, there are 951 registered participants from 71 countries (the list of countries is given below). During the first week, 65 solutions were submitted, out of which 44 were correct.

Correct solutions were submitted by:

First NameSurnameCountrySchool/Universitydatetime
ThanadisCharoenrujijinThailandSuankularb Wittayalai School31/01/2113:59
NikitaSemeninRussiaMoscow Institute of Physics and Technology31/01/2114:29
Manh QuanNguyenVietnamHanoi – Amsterdam High School for the Gifted31/01/2114:39
EddieChenUnited StatesWest-Windsor Plainsboro High School North31/01/2114:41
Bayram AlpŞahinTurkeyAnkara Science HS31/01/2114:56
ArhaanAhmadIndiaKrishna Public School31/01/2116:27
ZheningLiCanadaSir John A. Macdonald Secondary School31/01/2117:45
Cristiana AndreeaMurgociRomaniaInternational Computer Highschool of Bucharest31/01/2117:49
Vlad-ȘtefanOrosRomania“Grigore Moisil” Informatics High School31/01/2118:54
Absur KhanSiamBangladeshNotre Dame College31/01/2120:03
HuiyuanWangChinaUniversity of Cambridge31/01/2122:48
PieterVan SteenweghenBelgiumImperial College London31/01/2123:18
VukHipSerbiaMathematical grammar school31/01/2123:21
DušanBegušSerbiaMathematical Grammar School31/01/2123:44
Fang TzuHsuTaiwanNational Taiwan University01/02/2101:36
Wesley AntonioMachado Andrade de AguiarBrazilMilitary School of Manaus01/02/2103:59
LotusChenChinaNo.2 High School Shijiazhuang01/02/2106:22
JiaxiSuChinaNO.1 Middle School attached to Central China Normal University01/02/2109:21
MinhTrang DaoVietNamHus highschool for gifted students01/02/2110:07
YuechenZhuChinaPeking University01/02/2110:41
JanisHunsLatviaUniversity of Cambridge01/02/2111:16
AmeyaDeshmukhIndiaSt. Joseph’s Convent High School01/02/2115:11
AnantLuniaIndiaDelhi Public School RK Puram01/02/2121:56
QianLinChinaUniversity of Oxford01/02/2122:39
Je QinChooiMalaysiaKolej Tuanku Ja’afar02/02/2102:43
Jianzheng   DengChinaShenzhen Senior High School02/02/2102:52
JoshuaTeoSingaporeNUS High School02/02/2108:28
AnastasiaPozharkovaRussiaMBOU “Gymnasium 91 named after M. V. Lomonosov”02/02/2111:36
XuanyuLinChinaShenzhen Foreign Languages School02/02/2114:53
OliwierUrbańskiPolandLiceum Ogólnokształcące nr 7 w Poznaniu03/02/2112:23
YuLuChinaSuzhou High School of Jiangsu Province03/02/2115:12
BatuhanKeskinTurkeyBoğazici University03/02/2118:03
SangyulLeeKoreaSeoul National University03/02/2118:42
PrakharSinghIndiaIIT Kanpur04/02/2107:07
TevžLotričSloveniaUniversity of Oxford04/02/2109:27
Gia HiểnNguyễnVietNamHUS High School for Gifted Students04/02/2112:33
PriteshMehtaIndiaAllen04/02/2118:04
JózsefGurzóHungaryBudapesti Fazekas Mihály Gyakorló Általános Iskola és Gimnázium04/02/2119:17
M. SubhiAbo RdanSyriaKnowledge private schools05/02/2118:45
Arturo Francisco Ruiz MercadoBoliviaHno. Felipe Palazón05/02/2121:27
BalázsKovácsHungaryHatvani Bajza József Gimnázium05/02/2122:30
DmitryKhvatovRussiaLyceum “Vorobyovy gory”06/02/2118:21
MartinVassilevBulgariaSMG “Paisii Hilendarski”07/02/2109:52
DengJinqiuChinaGuangdong Experimental High School06/02/2110:58

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.