제출 #101722

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
101722		mayhoubsaleh	Simfonija (COCI19_simfonija)	C++14	0 / 110	144 ms	3344 KiB

simfonija

#include <bits/stdc++.h>
#define ll long long
#define pb push_back

using namespace std;
ll n,k;
pair<ll,ll>a[100005];
bool mys(pair<ll,ll>a,pair<ll,ll>b){
    ll x=abs(a.first-a.second);
    ll y=abs(b.first-b.second);
    return x>y;
}
ll ans=0;
int main(){
    cin>>n>>k;
    for(ll i=0;i<n;i++){
        cin>>a[i].first;
    }
    for(ll i=0;i<n;i++){
        cin>>a[i].second;
    }
    sort(a,a+n,mys);
    ll mid1=0,mid2=0;
    for(ll i=k;i<n;i++){
        mid1+=a[i].first;
        mid2+=a[i].second;
    }
    ll m=n-k;
    mid1=(long double)(mid1*1.0/m+0.5);
    mid2=(long double)(mid2*1.0/m+0.5);

    ll x=mid1-mid2;
    //cout<<mid1<<' '<<mid2<<' '<<x<<endl;
    for(ll i=k;i<n;i++){
        ans+=abs(x+a[i].second-a[i].first);
    }
    cout<<ans<<endl;
    return 0;
}

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