| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1308745 | Rares | Aliens (IOI16_aliens) | C++20 | 0 ms | 0 KiB |
///mai intai n^3
#include <bits/stdc++.h>
#include "aliens.h"
using namespace std;
/**ifstream fin ("date.in");
ofstream fout ("date.out");
#define cin fin
#define cout fout**/
const int MAXN=1e5+10;
typedef long long ll;
ll INF=1e18;
int n,m,k;
ll dp[5010][5010];
vector <pair <int,int>> aux,v;
bool cmp (pair <int,int> a, pair <int,int> b){
if (a.first==b.first) return a.second>b.second;
return a.first<b.first;
}
ll take_photos (int N, int M, int K, int r[], int c[]){
n=N;
m=M;
k=K;
for (int i=0;i<n;++i){
r[i]++;
c[i]++;
if (r[i]>c[i]){
swap (r[i],c[i]);
}
aux.push_back ({r[i],c[i]});
}
sort (aux.begin (),aux.end (),cmp);
v.push_back ({0,0});
int cmax=0;
for (auto x:aux){
if (x.second>cmax){
cmax=x.second;
v.push_back (x);
}
}
n=v.size ()-1;
for (int i=0;i<=n;++i){
for (int j=0;j<=k;++j){
dp[i][j]=INF;
}
}
dp[0][0]=0;
for (int i=1;i<=n;++i){
for (int j=1;j<=min (i,k);++j){
for (int t=i-1;t>=0;--t){
///daca iau punctele de la i la t
if (j-1>t) break;
ll crt=dp[t][j-1];
crt=crt+1LL*(v[i].second-v[t+1].first+1)*(v[i].second-v[t+1].first+1);
ll aux=max (0,v[t].second-v[t+1].first+1);
crt=crt-1LL*aux*aux;
dp[i][j]=min (dp[i][j],crt);
}
}
}
ll rez=INF;
for (int i=1;i<=k;++i){
rez=min (rez,dp[n][i]);
}
return rez;
}