Submission #555642

#	Time	Username	Problem	Language	Result	Execution time	Memory
555642		fuad27	Aliens (IOI16_aliens)	C++17	12 / 100	148 ms	2260 KiB

aliens

#include "aliens.h"
#include<bits/stdc++.h>
using namespace std;
const long long INF = 1e18;
long long take_photos(int n, int m, int k, std::vector<int> r, std::vector<int> c) {
	for(int i = 0;i<n;i++) {
		if(c[i] < r[i]) {
			swap(c[i], r[i]);
		}
	}
	map<int,int> mp;
	for(int i = 0;i<n;i++) {
		mp[c[i]] = max(mp[c[i]], r[i]);
	}
	vector<pair<int,int>> pts;
	for(auto i:mp) {
		pair<int,int> p = i;
		pts.push_back(p);
	}
	sort(pts.begin(), pts.end());
	for(auto &i:pts) {
		swap(i.second, i.first);
	}
	n = pts.size();
	long long dp[n+1][k+1];
	for(int i = 0;i<=k;i++)dp[0][i] = 0;
	for(int j = 1;j<=n;j++)dp[j][0] = INF;
	for(int i = 1;i<=n;i++) {
		for(int j = 1;j<=k;j++) {
			dp[i][j] = INF;
			long long mx = (pts[i-1].second-pts[i-1].first+1);
			for(int t = i;t>=1;t--) {
				mx = max((long long)pts[i-1].second-pts[t-1].first+1, mx);
				dp[i][j] = min(dp[i][j], dp[t-1][j-1]+mx*mx);
			}
		}
	}
	return dp[n][k];
}

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