摘要: A - Happy New Year! 官方题解: Let’s enumerate the integers that satisfy the condition. 2 20 22 200 202 220 222 2000 2002 2020 2022 ... (其实就是把十进制换成二进制..... 阅读全文
posted @ 2022-01-14 21:27 veitsun 阅读(236) 评论(0) 推荐(0)