백준 온라인 저지, 자료구조 / 15577번: Prosjek (파이썬 / , 백준 실버문제)

문제 Little Ivica received N math grades and wants to calculate their average. He knows that the average of two numbers a and b is calculated as (a + b) / 2, but he still doesn’t know how to do it for multiple numbers. He calculates the average by writing down N grades and repeating the following operations N - 1 times: He chooses two numbers and erases them. He writes down the average of the two ..

2021.12.22