Submission #962963

#	Time	Username	Problem	Language	Result	Execution time	Memory
962963		penguin133	Aliens (IOI16_aliens)	C++17	25 / 100	124 ms	22876 KiB

aliens

#include <bits/stdc++.h>
using namespace std;
#include "aliens.h"
//#define int long long
typedef long long ll;
#define pi pair<ll, ll>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
 
ll dp[505][505], mn[1000005];
pi stuf[1000005];
long long take_photos(int n, int m, int k, std::vector<int> r, std::vector<int> c) {
	for(int i = 0; i <= m; i++)mn[i] = 1e18;
	for(int i = 0; i < n; i++){
		if(r[i] > c[i])swap(r[i], c[i]);
		mn[c[i]] = min(mn[c[i]], (ll)r[i]);
		stuf[i] = {c[i], r[i]};
	}
	sort(stuf, stuf + n);
	for(int i = m - 1; i >= 0; i--)mn[i] = min(mn[i], mn[i + 1]);
	//return 0;
	for(int i = 0; i <= n; i++)dp[i][0] = 1e18;
	for(int i = 0; i < n; i++){
		for(int j = 1; j <= k; j++){
			dp[i][j] = 1e18;
			for(int a = i; a >= 0; a--){
				dp[i][j] = min(dp[i][j], (a ? dp[a - 1][j - 1] : 0) + (stuf[i].fi - mn[stuf[a].fi] + 1) * (stuf[i].fi - mn[stuf[a].fi] + 1) - (a ? max(0ll, stuf[a - 1].fi - mn[stuf[a].fi] + 1) * (stuf[a - 1].fi - mn[stuf[a].fi] + 1) : 0) );
			}
		}
	}
    return dp[n - 1][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