Submission #1356299

#	Time	Username	Problem	Language	Result	Execution time	Memory
1356299		cnam9	Stove (JOI18_stove)	C++20	100 / 100	10 ms	824 KiB

stove

#include <iostream>
#include <algorithm>

using namespace std;

constexpr int N = 1e5 + 5;
int a[N];

signed main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    // freopen("input.txt", "r", stdin);

    int n, k;
    cin >> n >> k;

    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }
    int res = a[n - 1] - a[0] + 1;
    for (int i = n - 1; i; i--) {
        a[i] -= a[i - 1];
    }
    nth_element(a + 1, a + k, a + n, greater<int>{});
    for (int i = 1; i < k; i++) {
        res -= a[i] - 1;
    }

    cout << res;

    return 0;
}

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