class WrongNumberOfPlayersError < StandardError ; end
class NoSuchStrategyError < StandardError ; end

def rps_result (m1, m2)
  if m1 == "R"
    if m2 == "R" 0
    elsif m2 == "P" 1
    elsif m2 == "S" 0
    else
      raise NoSuchStrategyError
    end
#  elsif m1 == "P"
#    if m2 == "R" 0
#    elsif m2 == "P" 0
#    elsif m2 == "S" 1
#    else raise NoSuchStrategyError
#    end
#  elsif m1 == "S"
#    if m2 == "R" 1
#    elsif m2 == "P" 0
#    elsif m2 == "S" 0
#    else raise NoSuchStrategyError
#    end
#  else
#    raise NoSuchStrategyError
  end
end

def rps_game_winner(game)
    raise WrongNumberOfPlayersError unless game.length == 2
    game[rps_result(game[0][1],game[1][1])]
end

def rps_tournament_winner(tournament)
   # YOUR CODE HERE
end