Algo Talk: Railroads from Facebook Hacker Cup

I'm again joined by David (@SecondThread) to discuss an interesting algorithmic problem. It's Railroad Renovations from Facebook Hacker Cup Round 3. Watch the other video we made, Robot Cleaning    • Algo Talk with Errichto: Robot Cleaning   Full statement:   / b   Subscribe for more educational videos on algorithms, coding interviews and competitive programming. Watch my live streams on Twitch or my 2nd YT channel   / errichto   &    / errichto2   Frequently Asked Questions: https://github.com/Errichto/youtube/w...