We will hold <a href="https://atcoder.jp/contests/ahc007">THIRD PROGRAMMING CONTEST 2021 （AtCoder Heuristic Contest 007）</a>. - Contest URL: https://atcoder.jp/contests/ahc007 - Start Time: http://www.timeanddate.com/worldclock/fixedtime.html?iso=20211212T1600&p1=248 - Duration: 4 hours - Writer: <a href="/users/wata" class="username"><span class="user-yellow">wata</span></a> - Rated range: All (Heuristic Rating) The goal of AHC is to create a better solution to a problem for which it is difficult to find the optimal solution. We are looking forward to your participation!