Submission #554752

#	Time	Username	Problem	Language	Result	Execution time	Memory
554752		A_D	Simfonija (COCI19_simfonija)	C++14	110 / 110	29 ms	3300 KiB

simfonija

#include <bits/stdc++.h>
#define int long long
#define ii pair<int,int>
#define F first
#define S second
using namespace std;

const int N=1e5+100;
int a[N];
int pre[N];

void solve()
{
    int n,k;
    cin>>n>>k;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    for(int i=1;i<=n;i++){
        int b;
        cin>>b;
        a[i]-=b;
    }
    sort(a+1,a+n+1);
    for(int i=2;i<=n;i++){
        a[i]-=a[1];
    }
    a[1]=0;
    for(int i=1;i<=n;i++){
        pre[i]=pre[i-1]+a[i];
    }
    int l=k+1,r=n;
    int ans=1e18;
    /*
    for(int i=1;i<=n;i++){
        cout<<a[i]<<" ";
    }
    cout<<"\n";
    */
    while(l>=1){
        int mid=(l+r)/2;
        int v=(a[mid]*(mid-l+1)-(pre[mid]-pre[l-1]))+((pre[r]-pre[mid])-(a[mid]*(r-mid)));
        ans=min(ans,v);

      //  cout<<l<<" "<<r<<" "<<v<<"\n";


        l--;
        r--;
    }
    cout<<ans<<"\n";
}

main()
{
///*
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    //*/
    int t=1;
//    cin>>t;
    while(t--){
        solve();
    }
}






/*

7

7 2 5 4 7 4 2



*/

Compilation message (stderr)

simfonija.cpp:54:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   54 | main()
      | ^~~~

• Subtask 1: 11 / 11
• Subtask 2: 11 / 11
• Subtask 3: 11 / 11
• Subtask 4: 11 / 11
• Subtask 5: 11 / 11
• Subtask 6: 11 / 11
• Subtask 7: 11 / 11
• Subtask 8: 11 / 11
• Subtask 9: 11 / 11
• Subtask 10: 11 / 11