[UVA][幾何、半平面交] 10084 - Hotter Colder
Problem E: Hotter Colder
The children's game Hotter Colder is played as follows. Player
A leaves the room while player B hides an object somewhere in the room.
Player A re-enters
at position (0,0) and then visits
various other positions about the room. When player A v...
