The first hint for Problem 1 will be published on 29th October 2023 13:00 GMT, if there will be at least one correct solution by that time, or on 5th November, otherwise.
By 22nd October 2023, 13:00 GMT, there are 1052 participants from 82 countries. 41 solutions to P1 were submitted, out of which 0 were correct. Next update of the intermediate results: 29th October, 13:00 GMT.
Correct solutions by university students:
Correct solutions by pre-university students:
The list of countries:
Afghanistan, Argentina, Australia, Austria, Azerbaijan, Bangladesh, Belarus, Belgium, Bosnia And Herzegovina, Brazil, Bulgaria, Cambodia, Canada, China, Croatia, Czech Republic, Egypt, El Salvador, Estonia, Ethiopia, Finland, France, Georgia, Germany, Greece, Honduras, Hong Kong, Hungary, India, Indonesia, Iran, Israel, Italy, Japan, Kazakhstan, Kenya, Korea, Kosovo, Kyrgyzstan, Latvia, Liechtenstein, Lithuania, Macao, Malaysia, Mexico, Moldova, Mongolia, Montenegro, Morocco, Nepal, New Zealand, Nigeria, North Korea, North Macedonia, Pakistan, Philippines, Poland, Romania, Russia, Rwanda, Saudi Arabia, Singapore, Slovakia, South Africa, Spain, Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Turkey, Turkmenistan, Uganda, Ukraine, United Arab Emirates, United Kingdom, United States, Uzbekistan, Vietnam