[BOJ] 10773번:제로

import sys

k = int(input())

array = []
for _ in range(k):
    money = int(sys.stdin.readline())
    
    if money == 0:
        array.pop()
    else:
        array.append(money)
        
result = 0
for i in array:
    result += i
    
print(result)

 

출처 : https://www.acmicpc.net/problem/10773

10773번: 제로