PC2025 Problem 4 – intermediate results, week 2

As of February 9th, 1538 participants from 98 countries had registered. In total, 47 solutions were submitted for the fourth problem, 31 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

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