Submission #977642

#	Time	Username	Problem	Language	Result	Execution time	Memory
977642		happypotato	Meetings (IOI18_meetings)	C++17	19 / 100	586 ms	196640 KiB

meetings

#include "meetings.h"
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back
vector<long long> minimum_costs(vector<int32_t> H, vector<int32_t> L,
								vector<int32_t> R) {
	
	int n = H.size();
	if (n <= 5000) {
		vector<int> ans;
		int precomp[n][n];
		for (int i = 0; i < n; i++) {
			precomp[i][i] = H[i];
			int maxi;
			maxi = H[i];
			for (int j = i - 1; j >= 0; j--) {
				maxi = max(maxi, 1LL * H[j]);
				precomp[i][j] = precomp[i][j + 1] + maxi;
			}
			maxi = H[i];
			for (int j = i + 1; j < n; j++) {
				maxi = max(maxi, 1LL * H[j]);
				precomp[i][j] = precomp[i][j - 1] + maxi;
			}
		}
		for (int i = 0; i < (int)(L.size()); i++) {
			int l = L[i], r = R[i];
			int cur = 1e18;
			for (int j = l; j <= r; j++) {
				cur = min(cur, precomp[j][l] + precomp[j][r] - precomp[j][j]);
			}
			// cerr << l << ' ' << r << ' ' << cur << endl;
			ans.pb(cur);
		}
		return ans;
	}
	return {};
}
#undef int

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