이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int N=1e5+55;
int a[N];
int b[N];
ll x[N];
int n,k;
int pre;
int suf;
ll cur;
int j,i;
void solve(int pos)
{
pre--;
suf++;
//cout<<pre<<' '<<suf<<endl;
while(x[j]-x[pos]<x[pos]-x[i]&&i<pos&&j<n)
{
//cout<<' '<<i<<' '<<j<<endl;
cur+=x[j]-x[pos-1];
pre++;
suf--;
cur-=x[pos-1]-x[i];
j--;
i++;
}
//cout<<cur<<' ';
ll dif=x[pos]-x[pos-1];
cur+=dif*suf-dif*(pre+1);
}
int main()
{
ios::sync_with_stdio(false);
cin>>n>>k;
for(int i=0;i<n;i++)
cin>>a[i];
for(int i=0;i<n;i++)
cin>>b[i];
for(int i=0;i<n;i++)
x[i]=a[i]-b[i];
sort(x,x+n);
int temp=x[0];
for(int i=0;i<n;i++)
{
x[i]-=temp;
if(i<n-k)
cur+=abs(x[i]);
}
j=n-k;
ll ans=cur;
pre=n-k-1;
for(int i=1;i<n;i++)
{
solve(i);
ans=min(ans,cur);
}
cout<<ans<<endl;
return 0;
}
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