이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "aliens.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define N ((int)50*1000+100)
#define INF ((ll)1e18)
ll dp[2][N];
pair <int,int> a[N];
ll take_photos(int n, int m, int k,vector<int> r,vector<int> c)
{
for(int i=1;i<=n;i++)a[i]={min(r[i-1],c[i-1]),-max(r[i-1],c[i-1])};
sort(a+1,a+n+1);
int maxi=-1;
for(int i=1;i<=n;i++)
{
if(-a[i].second<=maxi){i--;n--;continue;}
maxi=-a[i].second;
}
for(int i=1;i<=n;i++)a[i].second*=-1;//,cout<<a[i].first<<" "<<a[i].second<<"\n";
dp[0][0]=0;
for(int i=1;i<N;i++)dp[0][i]=INF;
ll ans=INF;
for(int t=1;t<=k;t++)
for(int i=1;i<=n;i++)
{
dp[(t&1)][i]=INF;
for(int j=i;j>0;j--)
dp[(t&1)][i]=min(dp[(t&1)][i],dp[!(t&1)][j-1]+(a[i].second-a[j].first+1)*(a[i].second-a[j].first+1)-
((j>1)?((a[j-1].second-a[j].first+1)*(a[j-1].second-a[j].first+1)):0));
if(i==n)ans=min(ans,dp[(t&1)][i]);
// cout<<t<<" "<<i<<" "<<dp[(t&1)][i]<<"\n";
}
return ans;
}
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