Submission #769039

#	Time	Username	Problem	Language	Result	Execution time	Memory
769039		SanguineChameleon	Meetings (IOI18_meetings)	C++17	19 / 100	414 ms	234712 KiB

meetings

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

const long long inf = 1e18L + 20;
long long sum_l[5020][5020];
long long sum_r[5020][5020];

vector<long long> minimum_costs(vector<int> H, vector<int> L, vector<int> R) {
	int N = H.size();
	int Q = L.size();
	if (N <= 5000) {
		for (int i = 0; i < N; i++) {
			int mx = 0;
			long long sum = 0;
			for (int j = i; j >= 0; j--) {
				mx = max(mx, H[j]);
				sum += mx;
				sum_l[j][i] = sum;
			}
			mx = 0;
			sum = 0;
			for (int j = i; j < N; j++) {
				mx = max(mx, H[j]);
				sum += mx;
				sum_r[i][j] = sum;
			}
		}
		vector<long long> res(Q, inf);
		for (int i = 0; i < Q; i++) {
			for (int j = L[i]; j <= R[i]; j++) {
				res[i] = min(res[i], sum_l[L[i]][j] + sum_r[j][R[i]] - H[j]);
			}
		}
		return res;
	}
	return vector<long long>();
}

• Subtask 1: 4 / 4
• Subtask 2: 15 / 15
• Subtask 3: 0 / 17
• Subtask 4: 0 / 24
• Subtask 5: 0 / 40