AtCoder Beginner Contest 178 - All Solutions (A-F)

Contest link: https://atcoder.jp/contests/abc178 My submissions: https://atcoder.jp/contests/abc178/su... Blog on modular arithmetic: https://discuss.codechef.com/t/guide-... Didn't get to do this contest because of a horrible night of sleep (these contests are 8 AM for me, so I would have to wake up early as well), but I still made solutions for all of the problems. Intro 00:00 A 00:30 B 01:25 C (inclusion-exclusion sol) 05:37 C (more algorithmic sol) 07:39 D 12:24 E 16:45 F 25:16