Saitama got a date!

Saitama finally got a date! However, his date, Fubuki, was not impressed by him. She wanted to see how clever Saitama was. Hence she asked him a question. Saitama was given a list of numbers by his date, let the list be $N = [a1,a2,a3 ........ an].$ Saitama's task is to find out how many elements in the list is made up by combining other numbers from the list. He can combine a number A more t