Final: Upstairs/Downstairs
21 correct small sets and 16 correct large sets. View problem statement or contest analysis.
Compact solutions
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Solved in...
C++ (32 sets) D (2 sets) | Java (2 sets) C# (1 set) |
Submission Origin
Russia (4 contestants) Ukraine (3 contestants) Japan (3 contestants) China (3 contestants) | United States (2 contestants) South Africa (1 contestant) Slovakia (1 contestant) Poland (1 contestant) | Hong Kong (1 contestant) Canada (1 contestant) Bulgaria (1 contestant) |