双倍 经验 失败

$编号$	$\#1$	$\#2$
$代码$	$代码1$	$代码2$
$算法$	$强行遍历$	$贪心$
$时间复杂度$	$O(n^2)$ $!$	$O(n)$ $✔$
$Errors$	$\#4$ $TLE,\#5$ $TLE$	$\#2$ $WA,\#3$ $WA$
$成绩$	$76$	$76(Draw!)$

代码1
#include <iostream>
#include <deque>

using namespace std;

int main() {
    int n, k;
    cin >> n >> k;
    int a[n] = {0};
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    int max = -1;
    while (k) {
        int sum = 0;
        for (int i = 0; i < k; i++) {
            sum += a[i];
        }
        if (max < sum) max = sum;
        for (int i = k; i < n; i++) {
            sum += a[i];
            sum -= a[i - k];
            if (max < sum) max = sum;
        }
        k--;
    }
    cout << max;
    return 0;
}

代码2
#include <iostream>
#include <deque>
using namespace std;

deque < int > q;

int main() {
    int n, m;
    cin >> n >> m;
    int sum = 0, max = 0;
    int len = 0;
    int val;
    for (int i = 1; i <= n; i++) {
        cin >> val;
		sum += val;
        q.push_back(val);
        len++;
        if (len > m) {
            len--;
            sum -= q.front();
            q.pop_front();
        }
        if (sum > max) max = sum;
        if (sum < 0) {
            q.clear();
            sum = 0;
            len = 0;
        }
    }
    cout << max;
    return 0;
}

$QwQ$ $lol$

$troll$ $P:)$ $69420$