A game on a pyramid
Source: Turkey JBMO TST 2016 P2
May 22, 2016
combinatorics solvedcombinatorics
Problem Statement
A and B plays a game on a pyramid whose base is a -gon. In each turn, a player colors a side (which was not colored before) of the pyramid using one of the colors such that none of the sides with a common vertex have the same color. If A starts the game, find the minimal value of for which can guarantee that all sides are colored.