洛谷 P1115 最大子段和

严格注意语句顺序不能改变。

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#include<iostream>
#include<algorithm>
using namespace std;
int n;
int A[200005];
int mmax = 0x80000000;
int main() {
ios::sync_with_stdio(false);
cin >> n;
for (int i = 1; i <= n; i++)cin >> A[i];
int curSum = 0;
for (int i = 1; i <= n; i++) {
curSum += A[i];
mmax = max(mmax, curSum);
if (curSum < 0)curSum = 0;
}
cout << mmax;
}