m = gets.to_i
puts [0,0,1,1,1,1,1,0,1,1,1,0,1,1,1,1,1,0,1,0,1,0,1,0,1,0,1,1,1,1,1,0,1,0,1,1,1,0,1,1,1][m] == 0 ? "even" : "odd"