Quick Answer
Olive Oil does not use the same grams-to-cups value as every other ingredient. Using a practical US cup reference, 216 grams of olive oil is about 1 cup.
That means 100 grams of olive oil is about 0.46 cups, while 200 grams is about 0.93 cups.
Olive oil is lighter than water due to its lower density. One cup of olive oil weighs noticeably less than one cup of water or milk.