"Saturday 31st of January Project Euler will reach a major milestone with the publication of our 500th problem. To celebrate this the team has composed a specia

"Saturday 31st of January Project Euler will reach a major milestone with the publication of our 500th problem. To celebrate this the team has composed a special problem in which the number 500 occurs repeatedly. In addition we're going to publish an ordinary problem simultaneously as problem 501. Both problems are published at 13:00 London time. We invite all members to participate in our problem solving party. As celebrator of this jubilee we're allowed to ask the participants for a present. Well, here's our wish: please don't share any information about our party and the dishes we're serving you outside the fora dedicated to our dishes after your meal. This to allow those that are late to the party to consume our dishes undisturbed by premature revelations about what we are serving." https://projecteuler.net/news https://projecteuler.net/news