#include <bits/stdc++.h>
#define ar array
#define all(x) x.begin(), x.end()
using namespace std;
typedef long long ll;
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    int n, k;
    cin >> n >> k;
    vector <int> a(n);
    for (int i = 0; i < n; i++)
        cin >> a[i];
    if (n == k)
        return cout << n, 0;
    vector <int> b;
    int ans = k;
    for (int i = 1; i < n; i++)
        b.push_back(a[i] - a[i - 1]);
    sort(all(b), greater<int>());
    for (int i = k; i + 1 < n; i++)
        ans += b[i];
    cout << ans;
}
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... | 
| # | Verdict  | Execution time | Memory | Grader output | 
|---|
| Fetching results... |