Problems from Baltic Olympiad in Informatics 2017, Day 2

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Cat in a tree 138 21 15% 0.08 25 17 68% 6.7
Friends 32 6 19% 0.44 5 3 60% 5.6
Plus Minus 145 49 34% 0.05 18 18 100% 2.8