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2019年6月23日
[2018 ACM-ICPC 中国大学生程序设计竞赛线上赛 ]Rock Paper Scissors Lizard Spock.(FFT)
摘要： Description: Didi is a curious baby. One day, she finds a curious game, which named Rock Paper Scissors Lizard Spock. The game is an upgraded version 阅读全文
posted @ 2019-06-23 20:11 Through_The_Night 阅读(336) 评论(0) 推荐(0)
CF622F The Sum of the k-th Powers (自然数幂和）
摘要： There are well-known formulas: , , . Also mathematicians found similar formulas for higher degrees. Find the value of the sum modulo 109 + 7 (so you s 阅读全文
posted @ 2019-06-23 16:50 Through_The_Night 阅读(271) 评论(0) 推荐(0)