Submission #921895

#	Time	Username	Problem	Language	Result	Execution time	Memory
921895		bean	Stove (JOI18_stove)	C++17	100 / 100	20 ms	2140 KiB

stove

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

using ll = long long;

void solve() {
    int n, k;
    cin >> n >> k;
    vector<int> a(n);
    for (int &x : a) cin >> x;
    int ans = a[n - 1] - a[0] + 1;
    vector<int> b(n - 1);
    for (int i = 0; i < n - 1; i++) {
        b[i] = a[i + 1] - a[i] - 1;
    }
    sort(b.begin(), b.end(), greater<>());
    for (int i = 0; i < k - 1; i++) {
        ans -= b[i];
    }
    cout << ans;
}

int main() {
    cin.tie(0)->sync_with_stdio(0);

    int tt = 1;
    // cin >> tt;

    while (tt--) {
        solve();
    }

    return 0;
}

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