Submission #525184

#	Time	Username	Problem	Language	Result	Execution time	Memory
525184		InviBull	Stove (JOI18_stove)	C++17	100 / 100	49 ms	2084 KiB

stove

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

int main() {
    int n, k, ans = 0;
    cin >> n >> k;
    vector< int > a(n);

    for (int i = 0; i < n; i++) cin >> a[i];

    for (int i = 1; i < n; i++){
        a.push_back(a[i] - a[i - 1] - 1);
    }

    sort(a.begin() + n, a.end());

    for (int i = 0; i < n - k; i++){
        ans += a[n + i];
    }

    cout << ans + n << endl;
}

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