Submission #127215

#	Time	Username	Problem	Language	Result	Execution time	Memory
127215		gaoxam123	Stove (JOI18_stove)	C++14	100 / 100	88 ms	1652 KiB

stove

#include<bits/stdc++.h>
using namespace std;
int n,k;
int a[100005];
int main(){
	vector<int> ans;
	cin>>n>>k;
	for(int i=1;i<=n;i++){
		cin>>a[i];
	}
	for(int i=2;i<=n;i++){
		ans.push_back(a[i]-a[i-1]);
	}
	sort(ans.begin(),ans.end());
	int cnt=k;
	for(int i=0;i<n-k;i++){
		cnt+=ans[i];
	}
	cout<<cnt;
}

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