题解 | 股票交易
股票交易
https://www.nowcoder.com/practice/2e5bda778a1940f7b9ecc84c5b832d84
input()
nums = list(map(int, input().split()))
a, ans = nums[0], -nums[0]
for x in nums:
if x - a > ans:
ans = x - a
elif x < a:
a = x
print(ans)
