Submission #1248546

#	Time	Username	Problem	Language	Result	Execution time	Memory
1248546		antonn	Stove (JOI18_stove)	C++20	100 / 100	11 ms	584 KiB

stove

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 1e5 + 7;

int a[N];

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, k;
    cin >> n >> k;
    for (int i = 1; i <= n; ++i) cin >> a[i];
    ll ans = a[n] - a[1] + 1;
    for (int i = 1; i < n; ++i) a[i] = a[i + 1] - a[i] - 1;
    sort(a + 1, a + n);
    reverse(a + 1, a + n);
    for (int i = 1; i < k; ++i) ans -= a[i];
    cout << ans << "\n";
    return 0;
}

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