关于加速：

--- codeforces.com ping statistics ---
10 packets transmitted, 7 packets received, 30.0% packet loss
round-trip min/avg/max/stddev = 226.432/259.915/299.609/28.197 ms

--- atcoder.jp ping statistics ---
10 packets transmitted, 0 packets received, 100.0% packet loss

本人Safari 17$\textcolor{white}{\texttt{macOS14，不要问我为什么用Beta，因为想}}$