Submission #127196

#	Time	Username	Problem	Language	Result	Execution time	Memory
127196		tuanasanh	Stove (JOI18_stove)	C++11	100 / 100	96 ms	2244 KiB

stove

#include<bits/stdc++.h>
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
using namespace std;
const int N=1e5+50;
int a[N],d[N];
int n,k,ans;
signed main(){
//	freopen(".inp","r",stdin);
//	freopen(".out","w",stdout);
//	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin>>n>>k;
	ans=n;
	for(int i=0;i<n;i++) cin>>a[i];
	for(int i=0;i<n-1;i++) d[i]=a[i+1]-a[i]-1;
	sort(d,d+n-1);
	for(int i=0;i<n-k;i++) ans+=d[i];
	cout<<ans;
}

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