12 2022 档案

【PTA】1049 Counting Ones
摘要：The task is simple: given any positive integer N, you are supposed to count the total number of 1's in the decimal form of the integers from 1 to N. F 阅读全文
posted @ 2022-12-22 15:06 天涯海角寻天涯 阅读(39) 评论(0) 推荐(0) 编辑