PC2021: Intermediate results, Problem 2, week 3

By 21st February 2021, there are 992 registered participants from 71 countries (the list of countries is given below). During the first three weeks, 128 solutions were submitted, out of which 79 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
AdamDžavoronokSlovakiaGymnázium Poštová 907/02/2119:18
CristianArdeleanuRomaniaInternational Computer High School Bucharest09/02/2115:24
HugoBäckmanSwedenChalmers University09/02/2122:15
Sebastián AndrésArévalo AguirreEl SalvadorInstituto Emiliani10/02/2113:37
DutaKartvelishviliGeorgiaLEPL Kutaisi Phys. Math. Public School N4110/02/2116:09
AbdullahAlHussniSyriaAl Saade HS, Syria11/02/2122:30
Caio AugustoSiqueira da SilvaBrazilColégio Objetivo Integrado12/02/2104:46
ElioMoreauItalyÉcole Polytechnique Fédérale de Lausanne 12/02/2116:58
AlessandroRezziItalyUniversity of Padova13/02/2111:51
RicardsKnipsisLatviaUniversity of Manchester13/02/2114:11
TimothyHoSingaporeGap Year13/02/2115:06
NitheshSanjeevi SaravananSingaporeIn gap year13/02/2117:30
PhatthanonPattanakanvijitThailandSuankularb Wittayalai School13/02/2118:41
GigiTsirekidzeGeorgiaLEPL Kutaisi Phys. Math. Public School N4113/02/2118:50
JaroslavHermanCzechiaCharles University, Prague13/02/2122:02
AbdalazeezJerbySyriaAl-Basel high school14/02/2100:35
SarthakPandaIndiaFiitjee Bhubaneswar14/02/2105:00
Gyan Seah;TJ Wei & P SeowSingaporeNUS High School of Mathematics and Science14/02/2108:48
AntoniaGhitaRomaniaInternational Computer High School of Bucharest14/02/2112:15
DaoxinZhongSingaporeUniversity of Oxford15/02/2100:02
Minh HoàngVietNamHUS High School for Gifted Students15/02/2103:06
GolamIshtiakBangladeshKushtia Government College15/02/2108:51
JamesWalklingUnited KingdomUniversity of Cambridge15/02/2110:40
Masuk RidwanSaumoBangladeshBangladesh University of Engineering and Technology15/02/2111:39
JieWangChinaZhangjiakou No.1 Middle School16/02/2113:42
Vineet Guleria IndiaSri Chaitanya 16/02/2118:11
AlessandroMenegonBrazilColégio Objetivo Integrado16/02/2118:34
AlexandarRoussevBulgariaFirst Language School17/02/2110:32
Ameya VikramaSinghIndiaFIITJEE Junior College19/02/2113:25
朝闻道Jiuyun CheungChinaHuaiyin Middle School19/02/2116:11
LanTianyiChinaBeijing Academy20/02/2101:45
星宇 姜Xingyu JiangChinaTongji University20/02/2103:45
AshmitDuttaUnited StatesWayzata High School20/02/2120:30
EvanKimUnited StatesTesla STEM High School21/02/2109:11

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.