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Problem description SmallR is an archer. SmallR is taking a match of archer with Zanoes. They try to shoot in the target in turns, and SmallR shoots f 阅读全文
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Problem description The weather is fine today and hence it's high time to climb the nearby pine and enjoy the landscape. The pine's trunk includes sev 阅读全文
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Problem description After winning gold and silver in IOI 2014, Akshat and Malvika want to have some fun. Now they are playing a game on a grid made of 阅读全文
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Problem description Being a nonconformist, Volodya is displeased with the current state of things, particularly with the order of natural numbers (nat 阅读全文
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Problem description Vasya works as a DJ in the best Berland nightclub, and he often uses dubstep music in his performance. Recently, he has decided to 阅读全文