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Problem DescriptionThere is a sequence ofnpositive integers. Fancycoder is addicted to learn their product, but this product may be extremely huge! Ho... 阅读全文
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DescriptionIt is a little known fact that cows love apples. Farmer John has two apple trees (which are conveniently numbered 1 and 2) in his field, ea... 阅读全文
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DescriptionFarmer John commanded his cows to search for different sets of numbers that sum to a given number. The cows use only numbers that are an in... 阅读全文
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DescriptionThe New Year garland consists of N lamps attached to a common wire that hangs down on the ends to which outermost lamps are affixed. The wi... 阅读全文
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DescriptionFarmer John wants to set up a telephone line at his farm. Unfortunately, the phone company is uncooperative, so he needs to pay for some of... 阅读全文