2020年7月31日
CF55D Beautiful numbers
摘要： CF55D Beautiful numbers 题目描述 Volodya is an odd boy and his taste is strange as well. It seems to him that a positive integer number is beautiful if an 阅读全文
posted @ 2020-07-31 14:10 Michmh 阅读(141) 评论(0) 推荐(0)