01 2015 档案
摘要:Problem Description A number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6,...
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摘要:类似的题目有HDU1058 humble number(翻译下来都是丑陋的数字)。 Description Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequ...
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摘要:Problem Description Given a number N, you are asked to count the number of integers between A and B inclusive which are relati...
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