摘要:
graham扫描法,参考 "yyb" cpp include include include include using namespace std; int n, din; const double eps=1e 7; struct Point{ double x, y; Point(double 阅读全文
摘要:
和sdoi的相关分析很像qwq,推柿子然后线段树搞搞 阅读全文
摘要:
"ref" cpp include include include using namespace std; int n, a[500005], fa[500005], siz[500005], cnt[500005], ans[500005]; int hmn[500005]; double k; 阅读全文