제출 #1339800

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1339800		darius1414	Simfonija (COCI19_simfonija)	C++20	110 / 110	53 ms	3540 KiB

simfonija

#include <iostream>
#include <algorithm>
#define nmx 100005
#define inf 1e17
using namespace std;
long long n,k,a[nmx],b[nmx],dif[nmx],sp[nmx],rsp;
int main()
{
    rsp=inf;
    cin>>n>>k;
    for (int i=1; i<=n; i++)
        cin>>a[i];
    for (int i=1; i<=n; i++)
    {
        cin>>b[i];
        dif[i]=b[i]-a[i];
    }
    sort (dif+1,dif+n+1);
    for (int i=1;i<=n;i++)
        sp[i]=sp[i-1]+dif[i];
    if (n==k)
    {
        cout<<0;
        return 0;
    }
    int st=1,dr=n-k;
    while (dr<=n)
    {
        int mid=(st+dr)/2;
        ///le adaug mid
        long long s=(sp[dr]-sp[mid-1])-dif[mid]*(dr-mid+1)+dif[mid]*(mid-st)-(sp[mid-1]-sp[st-1]);
        rsp=min(rsp,s);
        dr++;
        st++;
    }
    cout<<rsp;
}

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