2017年8月23日
HDU 3555:Bomb
摘要： 题目大意：求出1~n中含有“49”的数的个数。如n=500时：满足条件的有："49","149","249","349","449","490","491","492","493","494","495","496","497","498","499"。答案为15。 芒果君：初见这道题我有两个点没有 阅读全文
posted @ 2017-08-23 02:10 五十岚芒果酱 阅读(103) 评论(0) 推荐(0) 编辑