Submission #335369

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
335369	2020-12-12 06:06:55	AQT	Stove (JOI18_stove)	C++17	100 / 100	27 ms	2048 KiB

stove

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#include <bits/stdc++.h>
using namespace std;
int N, K;
int arr[100005];
int dif[100005];
int main(){
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  cin >> N >> K;
  for(int i = 1; i<=N; i++){
    cin >> arr[i];
    dif[i-1] = arr[i] - arr[i-1];
  }
  sort(dif+1, dif+N);
  K = N - K;
  int ans = 0;
  for(int i = 1; i<=K; i++){
    ans += dif[i];
  }
  cout << ans+ N - K << "\n";
}
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50