【PA2019】Trzy Kule
【AtCoder Regular Contest 061 F】Card Game for Three
【CODE FESTIVAL 2016 Grand Final J】123 Pairs
【AtCoder Grand Contest 019 F】Yes or No
【AtCoder Grand Contest 018 E】Sightseeing Plan
【AtCoder Grand Contest 008 E】Next or Nextnext
【AtCoder Grand Contest 021 E】Ball Eat Chameleons
【Codeforces 643F】Bears and Juice