Problems from Baltic Olympiad in Informatics 2017, Day 2

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Cat in a tree 486 110 23% 0.04 109 73 67% 7.1
Friends 110 14 13% 0.04 25 11 44% 7.7
Plus Minus 394 118 30% 0.03 92 75 82% 5.6