Problems from Baltic Olympiad in Informatics 2017, Day 2

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Cat in a tree 386 81 21% 0.04 88 58 66% 6.2
Friends 110 14 13% 0.04 25 11 44% 7.4
Plus Minus 333 101 30% 0.03 78 65 83% 5.3