Submission #827102

#	Time	Username	Problem	Language	Result	Execution time	Memory
827102		Pekiban	Stove (JOI18_stove)	C++17	100 / 100	15 ms	2248 KiB

stove

#include <algorithm>
#include <bits/stdc++.h>

using namespace std;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n, k;
    cin >> n >> k;
    int a[n];
    vector<int> v;
    for (int i = 0; i < n; ++i) {
        cin >> a[i];
        if (i) {
            v.push_back(a[i-1]-a[i]);
        }
    }
    int ans = k + a[n-1] - a[0];
    sort(v.begin(), v.end());
    for (int i = 0; i+1 < k; ++i) {
        ans += v[i];
    }
    cout << ans << '\n';
}

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