Submission #131892

#	Time	Username	Problem	Language	Result	Execution time	Memory
131892		amiratou	모임들 (IOI18_meetings)	C++14	19 / 100	872 ms	626072 KiB

meetings

#include "meetings.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define INF LLONG_MAX
ll pre[5001][5001],suf[5001][5001];
ll cum[5001][5001],cum2[5001][5001];
vector<ll> minimum_costs(vector<int> H, vector<int> L,vector<int> R) {
	int n=H.size();
	for (int i = 0; i < n; ++i)
		for (int j = i; j < n;++j)
		{
			pre[i][j]=H[j];
			if(j)pre[i][j]=max(pre[i][j],pre[i][j-1]);
		}
	for (int i = n-1; i >= 0; i--)
		for (int j = i; j >= 0;j--)
		{
			suf[i][j]=H[j];
			if(j!=(n-1))suf[i][j]=max(suf[i][j],suf[i][j+1]);
		}
	for (int i = 0; i < n; ++i)
		for (int j = 0; j < n; ++j)
		{
			cum2[i][j]+=suf[i][j];
			if(i)cum2[i][j]+=cum2[i-1][j];
			cum[i][j]+=pre[i][j];
			if(i)cum[i][j]+=cum[i-1][j];
		}
	int Q = L.size();
	vector<ll> C(Q);
	for (int q = 0; q < Q; ++q) {
		ll ans=INF;
		for (int i = L[q]; i <=R[q] ; ++i)
			ans=min(ans,cum2[R[q]][i]+cum[n-1][i]-(L[q]?cum[L[q]-1][i]:0)-H[i]);
		C[q]=ans;
	}
	return C;
}

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