제출 #696962

#제출 시각아이디문제언어결과실행 시간메모리
696962amirhoseinfar1385Stove (JOI18_stove)C++17
100 / 100
21 ms2060 KiB
#include<bits/stdc++.h>
using namespace std;

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n,k;
	cin>>n>>k;
	vector<int>all(n);
	for(int i=0;i<n;i++){
		cin>>all[i];
	}
	sort(all.begin(),all.end());
	vector<int>allk(n-1);
	for(int i=1;i<n;i++){
		allk[i-1]=all[i]-all[i-1]-1;
	}
	sort(allk.rbegin(),allk.rend());
	long long res=all.back()-all[0]+1;
	for(int i=0;i<k-1;i++){
		res-=allk[i];
	}
	cout<<res<<"\n";
}
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