Question 11
Nine members of Bebragram have the initial profile colors shown. An edge means friendship. Everyone wants a white profile. At 8 am each day a member may turn white if at least half of their friends are white. What is the minimum number of days until all nine are white?
Editorial timing convention: updates at the same 8 am are simultaneous, based on the colors just before that update; white profiles stay white.
Editorial timing convention: updates at the same 8 am are simultaneous, based on the colors just before that update; white profiles stay white.