PC2025 Problem 4 – intermediate results, week 9

As of March 30th, 1650 participants from 100 countries had registered. In total, 92 solutions were submitted for the fourth problem, 67 of which were correct.

Correct solutions by pre-university students:

First nameSurnameCountrySchoolP4 date time
DD/MM/YY 00:00
RobertasJuknevičiusLithuaniaKaunas University of Technology Gymnasium26/1/25 17:55
AndreiVilaRomaniaInternational Computer High School Bucharest26/1/25 18:04
GrigoriiGrechkinSchool CPM26/1/25 21:49
DariusGraurMoldovaLiceul Teoretic Orizont26/1/25 22:17
Kai WenTeoSingaporeRaffles Institution27/1/25 03:25
Badekai Vishruth KrishnaRamachandra BhatIndiaMaa Bharati Senior Secondary School27/1/25 05:34
JoshuaWangUnited StatesBrookfield Central High School27/1/25 07:29
SiddhaarthDharaniSingaporeNUS High School27/1/25 14:02
AlexandruBordeiMoldovaLT “Orizont” Durlesti27/1/25 14:25
KanishkJainIndiaALLEN Kota27/1/25 19:12
OwenZhouUnited StatesBasis Scottsdale28/1/25 06:13
MoritzRohnerLuxembourgLycée de Garçons Esch (LGE)28/1/25 07:35
ShresthSuraiyaIndiaNarayana School29/1/25 07:30
AlexSecrieruMoldovaLT “Orizont”30/1/25 08:47
DamjanStojanovNorth MacedoniaYahya Kemal Skopje31/1/25 21:24
PavelBulanovSchool #5331/2/25 19:15
AljažErmanSloveniaGimnazija Kranj1/2/25 21:34
AlexandraStefanova-Razumnaya2392/2/25 12:05
TomasRazbadauskasLithuaniaKaunas University of Technology Gymnasium2/2/25 19:47
FrancescoGariglioItalyIIS Majorana Moncalieri8/2/25 15:19
ArtyomEryominLyceum №238/2/25 16:42
ZanderLiCanadaLaurel Heights Secondary School9/2/25 18:58
ChetanMalviyaINDIANarayana e-Techno School – Mumbai10/2/25 07:52
LucaGâleaRomaniaNational College Iasi10/2/25 21:46
Kai XinChenChinaGuangDong ShiYan middle school – ShenZhen High school.11/2/25 14:19
IlyaPavlovПФМЛ №23912/2/25 22:14
MikhailLazarevLetovo School15/2/25 09:15
SauryaShresthaNepalSt. Xavier’s College, Nepal15/2/25 21:28
DaniilsKoselevsLatviaJauno Lideru Vidusskola15/2/25 21:38
ZeynebMehemmedliAzerbaijanTTEL15/2/25 21:58
AmritRajIndiaMaa Bharti Sr. Sec. School16/2/25 06:28
EnejJaukSloveniaGimnazija Bežigrad16/2/25 11:33
MahammadJafarliAzerbaijanTechnical-Humanitarian Lyceum22/2/25 10:40
YisiLiuChinaThe First High School of Changsha22/2/25 16:23
SubhanshuYadavIndiaFIITJEE23/2/25 20:57
AlpTerliksizTürkiyeEnka Science and Technology Highschool24/2/25 11:51
OytunErTürkiyeKadıköy Anatolian Highschool28/2/25 18:38
Raiq BabazadeMurad Khalil, Ibrahim ValehliAzerbaijanPhysics, Mathematics and Informatics lyceum28/2/25 18:58
TanayTekadeIndiaSchool of Scholars1/3/25 08:22
Tejas PenugondaTalha AshrafIndia/PakistanNixor College1/3/25 19:15
IlyaShpakovKapitza lyceum1/3/25 23:43
TuncayAmiraslanliAzerbaijanSumgait school N232/3/25 11:06
RahulNandiBangladeshChattogram College2/3/25 12:57
MaximOsatskiyLETOVO School3/3/25 20:00
CarloDi LorenzoItalyLiceo Newton Chivasso8/3/25 17:30
SaskiaPõldmaaEstoniaTallinn Secondary School of Sciences9/3/25 10:46
AdityaDas JituBangladeshChattogram College10/3/25 17:39
ItaloVidaurreEl SalvadorPrograma Jovenes Talento14/3/25 18:20
AryanPrakash VermaIndiaallen28/3/25 20:57
DarshSikkaIndiaDPS RK Puram30/3/25 11:44

Correct solutions by university students:

First nameSurnameCountryUniversityP4 date time
DD/MM/YY 00:00
DženanMidžićBosnia and HerzegovinaUniversity of Rijeka26/1/25 14:34
GuyGinzbergIsraelThe Open University of Israel26/1/25 15:58
Ilan MiheljaIvan HegedićCroatiaUniversity of Zagreb, EPFL26/1/25 16:53
IaroslavPozdniakMoscow Institute of Physics and Technology27/1/25 01:32
Adrian, Bruno, DanielSerrano Capatina, Pontecorvo, Gonzalez FilipovSwitzerlandÉcole Polytechnique Fédérale de Lausanne27/1/25 16:55
QiruiHEHong KongChinese University of Hong Kong28/1/25 03:03
EricWangUnited StatesMassachusetts Institute of Technology30/1/25 00:45
DhruvShahIndiaMassachusetts Institute of Technology2/2/25 16:27
Emerson FranzuaAldana GavarreteHondurasUniversidad Nacional Autónoma de Honduras7/2/25 01:35
Hui XiangSimSingaporeNational University of Singapore7/2/25 04:53
KonstantinRodionenkoITMO University23/2/25 12:50
MarcoAltamuraItalyUniversità di Padova23/2/25 12:56
ŠtěpánPlassCzech RepublicUniverzita Karlova25/2/25 18:25
Sifat AhmedTusharBangladeshUniversity of Dhaka5/3/25 17:22
LarranceXingUnited StatesUniversity of Chicago15/3/25 04:43
MarinusLehmannGermanyUniversity of Potsdam15/3/25 16:29
MichałKołodziejczykPolandWarsaw University of Technology22/3/25 20:26