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摘要:P1118 [USACO06FEB]数字三角形Backward Digit Su… 题目描述 FJ and his cows enjoy playing a mental game. They write down the numbers from 1 to N (1 <= N <= 10) in 阅读全文
posted @ 2018-03-24 09:30 DDYYZZ 阅读(375) 评论(0) 推荐(0) 编辑