https://www.acmicpc.net/problem/11399 python

baekjoon11399.py

def baekjoon11399(length, times_to_wait_in_line):
    times_to_wait_in_line.sort()
    cal = sum(times_to_wait_in_line)
    result = cal
    for i in range(length - 1, 0, -1):
        cal -= times_to_wait_in_line[i]
        result += cal
    return result


assert(baekjoon11399(5, [3,1,4,3,2]) == 32)