Don't 100!!

This game is very simple.
You'll win if you're not say the 100.

Let me explain the rules easily.
You and computer will continue to add the numbers from 1 to 3 alternately starting from 0.
Loser is the person who said (100, for example) a predetermined number.
In this case the winner is to say who said that is 99.

This game has four ranks:
- Easy. (30 is the loser)
- Standard. (50 is the loser)
- Difficult. (100 is a loser)
- Crazy. (Random numbers)

Score is determined by the sum of the numbers, number of times and the length of time taken until a predetermined number.
You can earn a high score if you can win without giving a chance to COM.

You can earn scores when you lose the game. However, it is a lot lower scores than when you win.

You can always win. Because there is a winning strategy. There are hints in the statement to this description.

Won the rank of all, let's aim to the top of the world ranking! !