Submission #119977

#	Time	Username	Problem	Language	Result	Execution time	Memory
119977		Lawliet	Aliens (IOI16_aliens)	C++14	12 / 100	231 ms	200164 KiB

aliens

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


#define X first
#define Y second
#define MAXK 510
#define MAXN 50010
#define INF 1000000000000000000LL

using namespace std;
typedef long long int lli;
typedef pair<lli,lli> pii;

lli N, M, K;

lli dp[MAXN][MAXK];

vector<pii> points;

lli cost(int i, int j)
{
	lli dif = points[i].X - points[j].X + 1;
	return dif*dif;
}

lli DP(int i, int k)
{
	if(dp[i][k] != -1) return dp[i][k];

	if(i == 0) return dp[i][k] = 0;
	if(k == 0) return dp[i][k] = INF;

	dp[i][k] = INF;

	for(int g = 1 ; g <= i ; g++)
		dp[i][k] = min(dp[i][k] , DP(g - 1 , k - 1) + cost(i , g));

	return dp[i][k];
}

long long int take_photos(int n, int m, int k, std::vector<int> r, std::vector<int> c)
{
	N = n; M = m; K = k;

	memset(dp , -1 , sizeof(dp));

	points.push_back({-1 , -1});

	for(int g = 0 ; g < n ; g++)
		points.push_back({c[g] , r[g]});

	sort(points.begin(),points.end());

	return DP(n , k);
}

/*int main()
{
	int nn, mm, kk;
	int n1, n2;
	scanf("%d %d %d",&nn,&mm,&kk);

	vector<int> xx, yy;

	for(int g = 0 ; g < nn ; g++)
	{
		scanf("%d %d",&n1,&n2);

		xx.push_back(n1);
		yy.push_back(n2);
	}

	printf("%lld\n",take_photos(nn , mm , kk , xx , yy));
}*/

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