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Have you ever played quoit in a playground? Quoit is a game in which flat rings are pitched at some toys, with all the toys encircled awarded.In the f 阅读全文
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Problem Description The three hands of the clock are rotating every second and meeting each other many times everyday. Finally, they get bored of this 阅读全文
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Problem Description A number sequence is defined as follows:f(1) = 1, f(2) = 1, f(n) = (A * f(n - 1) + B * f(n - 2)) mod 7.Given A, B, and n, you are 阅读全文
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自从 暑假 ACM集训之后就再也没有碰过 ACM了 以前说出去的话都是泼出去的水啊 哈哈哈 水一道题啊 一年过去了 Problem Description Contest time again! How excited it is to see balloons floating around. B 阅读全文
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Mohammad has recently visited Switzerland. As heloves his friends very much, he decided to buy somechocolate for them, but as this fine chocolate is v... 阅读全文
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DescriptionYou probably have played the game "Throwing Balls into the Basket". It is a simple game. You have to throw a ball into a basket from a cert... 阅读全文
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DescriptionLittle Lesha loves listening to music via his smartphone. But the smartphone doesn't have much memory, so Lesha listens to his favorite son... 阅读全文