PC2022 Problem 1 – Intermediate results, week 3

The third hint will be published on 19th December, 13:00 GMT.

By 12th December, 13:00 GMT, there are 982 participants from 76 countries. 136 solutions to P1 were submitted, out of which 46 were correct.

Correct solutions by university students:

First name	Surname	Country	School/University	Date time
Yuechen	Zhu	China	Peking University	21/11/21 13:53
Alessandro	Rezzi	Italy	University of Padova	21/11/21 17:59
Zhening Li	Eddie Chen	Canada/United States	Massachusetts Institute of Technology	22/11/21 06:17
Tasuku	Ono	Japan	Harvard University	22/11/21 17:17
Ameya	Deshmukh	India	IIT Bombay	23/11/21 07:47
Yeswanth Narayana	Patnana	India	Indian institute of technology Madras	23/11/21 08:59
Isaac	Wu	Australia	University of Melbourne	25/11/21 05:03
Kyle	Bomeisl	United States	Rutgers University	27/11/21 03:49
Cheng Wei	Lin	Taiwan	National Cheng Kung University	29/11/21 09:05
Jaroslav	Herman	Czech Republic	Charles University	01/12/21 21:12
Victor	Lequin	France	École Normale Supérieure PSL	04/12/21 20:10
Ricards	Knipsis	Latvia	University of Manchester	05/12/21 00:46
Vinícius	Ferreira Rodrigues	Brazil	Universidade de São Paulo	05/12/21 03:54
Erik	Sünderhauf	Germany	Technical University of Munich	05/12/21 15:18
Tejas	Acharya	India	University of Oxford	06/12/21 17:03
Yanjun	Zhou	China	University of Oxford	07/12/21 01:03
Pom-pom	Tovey	Singapore	University of Oxford	07/12/21 21:04
Deng	Jinqiu	China	Beijing University of Aeronautics and Astronautics	08/12/21 14:36
Kevin	You	United States	Carnegie Mellon University	12/12/21 01:48
Ameya Vikrama	Singh	India	Indian Institute of Technology Bombay	12/12/21 11:51

Correct solutions by pre-university students:

David	Constantinescu	Pre-university	Romania	International Computer High School of Bucharest	21/11/21 16:58
Luca	Milanese	Pre-university	Italy	Liceo “Leonardo da Vinci”, Terracina	21/11/21 23:04
Minh Hoàng	Lê	Pre-university	Viet Nam	HUS High School for Gifted Students	22/11/21 04:31
Filip	Vučić	Pre-university	Croatia	I. gymnasium Zagreb	22/11/21 08:57
Alexandar	Roussev	Pre-university	Bulgaria	First Language School	23/11/21 11:26
Dženan	Midžić	Pre-university	Bosnia and Herzegovina	JU Gimnazija “Bihać”	23/11/21 21:51
Matej	Gelev	Pre-university	North Macedonia	Yahja Kemal	23/11/21 22:18
Sebastián	Arévalo	Pre-university	El Salvador	Instituto Emiliani	24/11/21 04:08
Vlad-Ștefan	Oros	Pre-university	Romania	“Grigore Moisil” Theoretical High School	24/11/21 14:10
Adam	Džavoronok	Pre-university	Slovakia	Gymnázium Poštová 9	25/11/21 17:30
Gabriel	Morais Barros	Pre-university	Brazil	Master	26/11/21 18:14
Absur Khan	Siam	Pre-university	Bangladesh	Gap Year	27/11/21 16:46
Vladimir George	Necula	Pre-university	Romania	International Computer High School of Bucharest	05/12/21 02:15
Kanishk	Prakhar	Pre-university	India	City Montessori School Gomtinagar Campus-2	05/12/21 09:34
Mayank	Anand	Pre-university	India	FIITJEE	05/12/21 17:52
Matheus	Felipe Ramos Borges	Pre-university	Brazil	Colégio Christus	05/12/21 21:30
Felipe	Souza Lima Rocha	Pre-university	Brazil	(Gap)	05/12/21 21:30
Alptürk	Eski	Pre-university	Turkey	Erbakır Science High School	06/12/21 05:25
YI-TING	LIN	Pre-university	Taiwan	Taichung First Senior High School	06/12/21 14:50
Karthik	Prakash	Pre-university	India	Vaels International School	07/12/21 10:33
Emir	Akdağ	Pre-university	Turkey	Bahcesehir Highschool of Science and Technology	11/12/21 09:13
Watcharakorn	Suttipong	Pre-university	Thailand	Triam Udom Suksa School	11/12/21 13:15
Gigi	Tsirekidze	Pre-university	Georgia	LEPL Kutaisi Andria Razmadze physics and mathematical public school N41	11/12/21 18:23
Rhythm	Kedia	Pre-university	India	Lord Buddha Public school	12/12/21 12:26
Vuk	Hip	Pre-university	Serbia	Mathematical Grammar School	12/12/21 12:28

The list of countries:
Algeria, Argentina, Australia, Azerbaijan, Bangladesh, Belarus, Belgique, Bosnia and Herzegovina, Brazil, Brunei Darussalam, Bulgaria, Canada, China, Costa Rica, Croatia, Czech Republic, 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, Spain, Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United States, Uzbekistan, Vietnam