Submission #718156

#	Time	Username	Problem	Language	Result	Execution time	Memory
718156		Yell0	Stove (JOI18_stove)	C++17	100 / 100	21 ms	2088 KiB

stove

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
const int MN=1e5+2;
int N,K,a[MN],in[MN];

int main() {
  ios::sync_with_stdio(0);cin.tie(0);
  cin>>N>>K;
  for(int i=0;i<N;++i) cin>>a[i];
  sort(a,a+N);
  for(int i=1;i<N;++i) in[i]=a[i]-a[i-1];
  sort(in+1,in+N);
  ll ans=N;
  for(int i=1;i<=N-K;++i) ans+=in[i]-1;
  cout<<ans<<'\n';
  return 0;
}

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