Submission #647418

#	Time	Username	Problem	Language	Result	Execution time	Memory
647418		LeonaRaging	Feast (NOI19_feast)	C++14	4 / 100	45 ms	4956 KiB

feast

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define fi first
#define se second
#define ll long long
#define pb push_back
#define db(val) "[" #val " = " << (val) << "] "

const ll mod = 1e9 + 7;
const int maxn = 3e5 + 4;
const int INF = 1e9;

int n, k, a[maxn];
    
signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    //freopen(".INP", "r", stdin);
    //freopen(".OUT", "w", stdout);
    cin >> n >> k;
    for (int i = 1; i <= n; i++)
        cin >> a[i];
    priority_queue<int, vector<int>, greater<int>> pq;
    int cur = 0, cnt = 0, res = 0;
    a[0] = a[1];
    a[n + 1] = -a[n];
    for (int i = 1; i <= n + 1; i++) {
        if (a[i] * a[i - 1] <= 0) {
            if (cur > 0) {
                res += cur;
                cnt++;
            }
            pq.push(abs(cur));
            cur = 0;
        }
        cur += a[i];
    }
    while (cnt > k) {
        res -= pq.top(); pq.pop();
        cnt--;
    }
    cout << res;
}

• Subtask 1: 4 / 4
• Subtask 2: 0 / 8
• Subtask 3: 0 / 18
• Subtask 4: 0 / 10
• Subtask 5: 0 / 11
• Subtask 6: 0 / 20
• Subtask 7: 0 / 29