Submission #103778

#	Time	Username	Problem	Language	Result	Execution time	Memory
103778		figter001	Aliens (IOI16_aliens)	C++17	12 / 100	111 ms	3420 KiB

aliens

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

using namespace std;

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
const int nax = 4010;

int dp[nax][nax];
pair<int,int> p[nax];

long long take_photos(int n, int m, int k, vector<int> r, vector<int> c) {
	for(int i=1;i<=n;i++)
		for(int j=0;j<=k;j++)
			dp[j][i] = 1e9;
	for(int i=1;i<=n;i++)
		p[i] = {r[i-1],c[i-1]};
	sort(p+1,p+n+1);
	dp[0][0] = 0;
	for(int u=1;u<=k;u++){
		for(int i=1;i<=n;i++){
			int x = p[i].first;
			int y = p[i].second;
			for(int l=1;l<=i;l++){
				int sz = (x - p[l].first + 1) * (x - p[l].first + 1);
				dp[u][i] = min(dp[u][i],dp[u-1][l-1] + sz);
			}
		}
	}
    return dp[k][n];
}

Compilation message (stderr)

aliens.cpp: In function 'long long int take_photos(int, int, int, std::vector<int>, std::vector<int>)':
aliens.cpp:25:8: warning: unused variable 'y' [-Wunused-variable]
    int y = p[i].second;
        ^

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