You have in your wallet $300, which you want to spend completely. You decide to spend all of it by buying food from a fancy restaurant with the following menu:  tofu scramble:$1
pancakes: $5 brunch combo:$20
saffron infused peach tea: $50 truffles:$100
caviar: $200  Let $$O$$ be the number of different ways that you can spend exactly$300. What are the last 3 digits of $$O$$?