Submission #1256855

#	Time	Username	Problem	Language	Result	Execution time	Memory
1256855		kawhiet	Stove (JOI18_stove)	C++20	100 / 100	13 ms	1096 KiB

stove

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

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, k;
    cin >> n >> k;
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    vector<int> d(n - 1);
    for (int i = 0; i < n - 1; i++) {
        d[i] = a[i + 1] - a[i] - 1;
    }
    sort(d.rbegin(), d.rend());
    int ans = a[n - 1] - a[0] + 1;
    for (int i = 0; i < k - 1; i++) {
        ans -= d[i];
    }
    cout << ans << '\n';

    return 0;
}

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