Submission #156961

#	Time	Username	Problem	Language	Result	Execution time	Memory
156961		a_player	Stove (JOI18_stove)	C++14	100 / 100	88 ms	2936 KiB

stove

#include <bits/stdc++.h>

#define f first
#define s second
#define mp make_pair
#define pb push_back

using namespace std;

typedef long long ll;
ll diff[100001];
ll v[100001];
int N,K;
ll s=0;
int main(){
	cin>>N>>K;
	for(int i=0;i<N;i++)cin>>v[i];
	for(int i=0;i<N-1;i++){
	diff[i]=v[i+1]-v[i];
	s+=diff[i];
	}
	sort(diff,diff+(N-1),greater<ll>());
	for(int i=0;i<K-1;i++)s-=diff[i]-1;
	cout<<s+1;
		
	return 0;
}

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