Submission #210710

#	Time	Username	Problem	Language	Result	Execution time	Memory
210710		ld_minh4354	Stove (JOI18_stove)	C++14	100 / 100	28 ms	2040 KiB

stove

#include<bits/stdc++.h>
using namespace std;

long long int n,k,i,a[100010];

signed main()
{
    ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	
	cin>>n>>k;
	for (i=1;i<n+1;i++) cin>>a[i];
	for (i=1;i<n;i++) a[i]=a[i+1]-a[i];
	sort(a+1,a+n+1);
	long long int ans=n;
	for (i=1;i<n-k+1;i++) ans=ans+a[i]-1;
	cout<<ans;
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50