[백준/Python] 10773번: 제로

문제

 

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

---

Code

import sys

K = int(sys.stdin.readline())    

stack = []             
sum_v = 0           

for i in range(K):
    num = int(sys.stdin.readline())

    if stack and num == 0:
        stack.pop()
    else:
        stack.append(num)

print(sum(stack))