摘要: 代码: class Solution { public: long long get_prefix(long long prefix, long long n){ long long x = prefix; long long y = prefix + 1; long long sum = 0; w 阅读全文
posted @ 2021-11-05 22:30 楼主好菜啊 阅读(40) 评论(0) 推荐(0) 编辑