제출 #135519

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
135519		Mahdi_Jfri	Aliens (IOI16_aliens)	C++14	25 / 100	2048 ms	197968 KiB

aliens

#include "aliens.h"
#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back

const int maxn = 5e3 + 20;

int l[maxn] , r[maxn];

ll dp[maxn][maxn];

ll t2(int x)
{
	return 1LL * x * x;
}

long long take_photos(int n, int m, int k, vector<int> R, vector<int> C)
{
	m = m;
	vector<pair<int , int> > tmp;
	for(int i = 0; i < n; i++)
	{
		l[i] = min(R[i] , C[i]) , r[i] = max(R[i] , C[i]);
		tmp.pb({r[i] , -l[i]});
	}

	sort(tmp.begin() , tmp.end());
	for(int i = 0; i < n; i++)
	{
		l[i] = -tmp[i].second;
		r[i] = tmp[i].first;
	}
	tmp.clear();

	int mn = 1e9;
	for(int i = n - 1; i >= 0; i--)
		if(mn > l[i])
		{
			mn = l[i];
			tmp.pb({l[i] , r[i]});
		}

	reverse(tmp.begin() , tmp.end());
	n = tmp.size();
	for(int i = 1; i <= n; i++)
		l[i] = tmp[i - 1].first , r[i] = tmp[i - 1].second + 1;

	r[0] = l[0] = -1;
	memset(dp , 63 , sizeof dp);
	memset(dp[0] , 0 , sizeof dp[0]);
	for(int i = 1; i <= n; i++)
		for(int j = 1; j <= k; j++)
			for(int lx = i - 1; lx >= 0; lx--)
				dp[i][j] = min(dp[i][j] , dp[lx][j - 1] + t2(r[i] - l[lx + 1]) - t2(max(0 , r[lx] - l[lx + 1])));

	return dp[n][k];
}

• Subtask 1: 4 / 4
• Subtask 2: 12 / 12
• Subtask 3: 9 / 9
• Subtask 4: 0 / 16
• Subtask 5: 0 / 19
• Subtask 6: 0 / 40