Submission #30504

#	Time	Username	Problem	Language	Result	Execution time	Memory
30504		zoomswk	Aliens (IOI16_aliens)	C++14	12 / 100	206 ms	4796 KiB

aliens

#include "aliens.h"
#include <bits/stdc++.h>
using namespace std;

vector<pair<int, int>> p;
int L[100005], R[100005];
long long dp[505][505];

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++) p.push_back({min(r[i], c[i]), -max(r[i], c[i])});
    sort(p.begin(), p.end());
    int N=1, tmp_mx=-1;
    for(int i=0; i<n; i++){
        if(-p[i].second > tmp_mx){
            L[N] = p[i].first, R[N] = -p[i].second;
            tmp_mx = -p[i].second;
            N++;
        }
    }
    N--;
    for(int i=1; i<=N; i++){
        dp[i][0] = 1e18;
        for(int j=1; j<=k; j++){
            dp[i][j] = 1e18;
            for(int x=1; x<=i; x++){
                dp[i][j] = min(dp[i][j], dp[x-1][j-1]+1LL*(R[i]-L[x]+1)*(R[i]-L[x]+1)-(R[x-1] > L[x] ? 1LL*(R[x-1]-L[x]+1)*(R[x-1]-L[x]+1): 0LL));
            }
        }
    }
    return dp[N][min(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