PC2022 Problem 4 – Intermediate results, week 4

The second hint for Problem 4 will be published on 13th March 2022, 13:00 GMT .

By 20th March 2022, 13:00 GMT, there are 1118 participants from 80 countries. 40 solutions to P4 were submitted, out of which 37 were correct.

Correct solutions by university students:

First nameSurnameCountrySchool/UniversityP4 date time
DD/MM/YY 00:00:00
ErikSünderhaufGermanyTechnical University of Munich20/2/22 14:26
AlessandroRezziItalyUniversity of Padova20/2/22 15:34
ZiyueWangChinaHebei University of Technology20/2/22 16:22
YuechenZhuChinaPeking University20/2/22 18:55
JaroslavHermanCzech RepublicCharles University20/2/22 18:58
KevinYouUnited StatesCarnegie Mellon University20/2/22 22:35
ShofarSnoSurinameAnton de Kom University of Suriname20/2/22 23:49
QianLinChinaUniversity of Oxford21/2/22 00:15
Zhening LiEddie ChenCanada/United StatesMassachusetts Institute of Technology21/2/22 02:24
Ameya VikramaSinghIndiaIndian Institute of Technology Bombay21/2/22 06:50
IsaacWuAustraliaUniversity of Melbourne23/2/22 10:13
Bayram AlpSahinTurkeyBogazici University23/2/22 19:02
FelixSchwarzfischerGermanyTechnical University Munich27/2/22 10:31
MarinusLehmannGermanyUniversity of Potsdam6/3/22 10:25
SoumyadeepSarmaIndiaIndian Institute of Science7/3/22 14:59

Correct solutions by pre-university students:

Vlad-ȘtefanOrosRomania“Grigore Moisil” Theoretical High School20/2/22 15:38
LucaMilaneseItalyLiceo “Leonardo da Vinci”, Terracina20/2/22 16:07
AdamDžavoronokSlovakiaGymnázium Poštová 920/2/22 16:30
ChengkaiYuChinaThe High School Affiliated to Renmin University of China20/2/22 20:57
WangQuanquanChinaTianjin Yaohua High School21/2/22 02:11
YehyunChoiUnited StatesWestlake High School21/2/22 02:19
Emerson FranzuaAldana GavarreteHondurasSchool21/2/22 05:07
SebastiánArévaloEl SalvadorInstituto Emiliani21/2/22 16:08
FilipVučićCroatiaI. gymnasium Zagreb21/2/22 17:03
YijunLinChinaHigh School Attached to Herbin Normal University22/2/22 14:25
Jun LinJinhua ZhangChinaLvliang Fengshan Senior Middle School26/2/22 06:22
MatejGelevNorth MacedoniaYahja Kemal26/2/22 12:57
VukHipSerbiaMathematical Grammar School27/2/22 11:48
AzimuddinSheikhIndiaFIITJEE28/2/22 07:05
SarthakPandaIndiaFIITJEE Bhubaneswar28/2/22 10:47
FelixYewMalaysiaNational Junior College, Singapore28/2/22 14:03
TomasBabelisLithuaniaVilniaus jėzuitų gimnazija4/3/22 18:45
DženanMidžićBosnia and HerzegovinaJU Gimnazija “Bihać”5/3/22 17:58
Yang YiTang GuofengChinaChongqing Nankai Secondary School9/3/22 05:32
GigiTsirekidzeGeorgiaLEPL Kutaisi Andria Razmadze physics and mathematical public school N4111/3/22 09:30
Juan FranciscoLorusso Notaro FrancescoUnited KingdomAbbey College Cambridge12/3/22 15:47
RhythmKediaIndiaLord Buddha Public school15/3/22 10:11

The list of countries:
Algeria, Argentina, Australia, Azerbaijan, Bahrain, Bangladesh, Belarus, Belgique, Bosnia and Herzegovina, Brazil, Brunei Darussalam, Bulgaria, Canada, China, Costa Rica, Croatia, Czech Republic, Cuba, Egypt, El Salvador, Estonia, Ethiopia, Finland, France, Georgia, Germany, Greece, Honduras, Hong Kong, Hungary, India, Indonesia, Iran, Israel, Italy, Japan, Kazakhstan, Korea, Kosovo, Kyrgyzstan, Latvia, Lebanon, Lithuania, Luxembourg, Macao, Malaysia, Mexico, Moldova, Mongolia, Nepal, Nigeria, North Macedonia, Pakistan, Peru, Philippines, Poland, Romania, Russia, Saudi Arabia, Serbia, Singapore, Slovakia, South Africa, Spain, Sri Lanka, Suriname, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United States, Uzbekistan, Vietnam