A game coloring [0,1] segment
Source: Belarus TST 2024
July 17, 2024
gamescombinatorics
Problem Statement
Olya and Tolya are playing a game on segment. In the beginning it is white. In the first round Tolya chooses a number , and then Olya chooses a subsegment of of length and recolors every its point to the opposite color(white to black, black to white). In the next round players change roles, etc. The game lasts rounds. Let be the sum of length of white segments after the end of the game. If Olya wins, otherwise Tolya wins. Which player has a strategy to guarantee his win?
A. Naradzetski