Let us assume there are only n distinct types of Pokémons to capture in the entire Pokémon world, though there is an infinite supply of each type. Every day, you capture exactly one Pokémon. The Pokémon that you capture could be any one of the n types of Pokémons with equal probability. Your goal is to capture at least one Pokémon of all n distinct types. Let X denote the number of days needed to complete your goal.