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Balance Scale 题目描述 You, an experimental chemist, have a balance scale and a kit of weights for measuring weights of powder chemicals.For work efficien 阅读全文
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Prime-Factor Prime 题目描述 A positive integer is called a "prime-factor prime" when the number of its prime factors is prime. For example, 12 is a prime- 阅读全文
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Tournament Chart 题目描述 In 21XX, an annual programming contest, Japan Algorithmist GrandPrix (JAG) has become one of the most popular mind sports events 阅读全文
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Buildings II 题目描述 As a traveling salesman in a globalized world, Alan has always moved a lot. He almost never lived in the same town for more than a f 阅读全文
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Pants On Fire 题目描述 Donald and Mike are the leaders of the free world and haven’t yet (after half a year) managed to start a nuclear war. It is so grea 阅读全文
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Perpetuum Mobile 题目描述 The year is 1902. Albert Einstein is working in the patent office in Bern. Many patent proposals contain egregious errors; some e 阅读全文
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Water Testing 题目描述 You just bought a large piece of agricultural land, but you noticed that – according to regulations – you have to test the ground w 阅读全文
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Überwatch 题目描述 The lectures are over, the assignments complete and even those pesky teaching assistants have nothing left to criticize about your codi 阅读全文
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Cunning Friends 题目描述 Anthony and his friends Ben and Chris decided to play a game. They have N piles of stones such that the ith-pile contains Ai ston 阅读全文
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Mining Station on the Sea Problem Description The ocean is a treasure house of resources and the development of human society comes to depend more and 阅读全文