Submission #1318762

#	Time	Username	Problem	Language	Result	Execution time	Memory
1318762		_nothing_	Stove (JOI18_stove)	C++17	100 / 100	13 ms	812 KiB

stove

#include <bits/stdc++.h>
using namespace std;

int n, k;
int a[100100];

int main() {
  ios_base::sync_with_stdio(false);cin.tie(nullptr);
  cin >> n >> k;
  for (int i = 1; i <= n; ++i) cin >> a[i];
  int sum = a[n] - a[1] + 1;

  for (int i = 1; i < n; ++i) a[i] = a[i + 1] - 1 - a[i];
  --n;
  sort(a + 1, a + 1 + n, greater<int> ());

  for (int i = 1; i < k; ++i) sum -= a[i];

  cout << sum;

  return 0;
}

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