This contest has been postponed by AtCoder in order to implement measures against DDoS attacks. It is not canceled. We will inform you officially of the rescheduled date as soon as it is confirmed. The temporary measure of setting the contest start time to April 23, 2024 is due to the postponement and is not a final decision. In order to provide our users with a reliable service in the future, please allow us time to investigate and implement countermeasures against the attack. We kindly ask for your understanding and cooperation.