Submission #1177436

#	Time	Username	Problem	Language	Result	Execution time	Memory
1177436		batman3747	Stove (JOI18_stove)	C++20	100 / 100	36 ms	1292 KiB

stove

#include "bits/stdc++.h"
#define all(x) (x).begin(), (x).end()
#define debug(x) cerr << (#x) << " " << (x) << endl
#define SZ(s) ((int)s.size())
#define pb push_back
#define ff first
#define ss second
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;

int main(){
  int n, k;
  cin >> n >> k;
  vi a(n);
  for(int &x : a) cin >> x;
  vi dif;
  for(int i = 1; i < n; i ++){
    dif.pb(a[i] - a[i - 1]);
  }
  sort(all(dif));
  int ans = 0;
  for(int i = 0; i < n - k; i ++){
    ans += dif[i];
  }
  cout << ans + k;
}

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