이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "wiring.h"
#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
#include <cassert>
#define ll long long
#define mp make_pair
#define fs first
#define sn second
#define MX 202300
using namespace std;
ll n,sum[MX],num[MX],f[MX];
pair<ll,ll>a[MX];
ll ask(ll l,ll r)
{
int m1,m2,sum1,sum2;
m1=num[r]-num[l-1];
m2=r-l+1-m1;
sum1=sum[l+m1-1]-sum[l-1];
sum2=sum[r]-sum[r-m2];
return ((a[l+m1-1].fs*m1-sum1)+(sum2-a[r-m2+1].fs*m2)+(a[r-m2+1].fs-a[l+m1-1].fs)*max(m1,m2));
}
long long min_total_length(std::vector<int> r, std::vector<int> b) {
ll m1=r.size(),m2=b.size();
for(ll i=1;i<=m1;++i)
a[i]=mp(r[i-1],1);
for(ll i=1;i<=m2;++i)
a[i+m1]=mp(b[i-1],2);
n=m1+m2;
sort(a+1,a+1+n);
for(ll i=1;i<=n;++i){
if(a[i].sn==1)num[i]=1;
num[i]+=num[i-1];
sum[i]=sum[i-1]+a[i].fs;
}
memset(f,0x7f,sizeof(f));
f[0]=0;
for(ll i=n;i<=n;++i){
ll j=i-1,now=1;
while(j>0){
if(now==1&&a[j].sn==a[i].sn){
j--;
continue;
}
now=2;
if(a[j].sn==a[i].sn)break;
f[i]=min(f[i],min(f[j-1],f[j])+ask(j,i));
j--;
}
}
return f[n];
}
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