문제: https://www.acmicpc.net/problem/1912
문제 해결 과정
import sys
input = sys.stdin.readline
n = int(input())
s = list(map(int, input().split()))
answer = s[0]
for i in range(1, n):
s[i] = max(s[i], s[i-1] + s[i])
answer = max(answer, s[i])
print(answer)