Google Hash Code practice

Training before https://codingcompetitions.withgoogle.com/hashcode/ Live chat: https://www.twitch.tv/popout/errichto/chat?popout= Streaming schedule: https://calendar.google.com/calendar/embed?src=0qldhlvr0oqd867pdi8nkm8s04%40group.calendar.google.com - FAQ & GitHub Wiki: https://github.com/Errichto/youtube/wiki/FAQ - Discord: https://discord.gg/YWb3Bmg - Twitch: https://www.twitch.tv/errichto - Main YT channel with educational videos: https://www.youtube.com/errichto