Submission #703927

#	Time	Username	Problem	Language	Result	Execution time	Memory
703927		chenyan	Simfonija (COCI19_simfonija)	C++17	77 / 110	32 ms	4092 KiB

simfonija

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define pb emplace_back
#define N 100010
int dp[N],a[N],b[N],p[N];
vector<int>v;
signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n,m,i,k,j;
	cin>>n>>k;
	for(i=1;i<=n;i++)cin>>a[i];
	for(i=1;i<=n;i++)cin>>b[i];
	for(i=1;i<=n;i++)a[i]=b[i]-a[i];
	sort(a+1,a+n+1);
	for(i=1;i<=n;i++)p[i]=p[i-1]+a[i];
	int l=0,r=n-k,ans=1e18;
	for(i=1;i<=n;i++){
		while(l<i&&r<n&&a[r]-a[i]<a[i]-a[l+1])l++,r++;
		ans=min(ans,(p[r]-p[i])-a[i]*(r-i)+a[i]*(i-l)-(p[i]-p[l]));
	}
	cout<<ans<<'\n';
}

Compilation message (stderr)

simfonija.cpp: In function 'int main()':
simfonija.cpp:15:8: warning: unused variable 'm' [-Wunused-variable]
   15 |  int n,m,i,k,j;
      |        ^
simfonija.cpp:15:14: warning: unused variable 'j' [-Wunused-variable]
   15 |  int n,m,i,k,j;
      |              ^

• 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: 0 / 11
• Subtask 8: 0 / 11
• Subtask 9: 0 / 11
• Subtask 10: 11 / 11