SMO 2014
Source:
May 22, 2015
combinatorics
Problem Statement
Two players are playing game. Players alternately write down one natural number greater than , but it is not allowed to write linear combination previously written numbers with nonnegative integer coefficients. Player lose a game if he can't write a new number. Does any of players can have wiining strategy, if yes, then which one of them?Journal "Kvant" / Aleksandar Ilic