Submission #729346

#	Time	Username	Problem	Language	Result	Execution time	Memory
729346		Pring	Stove (JOI18_stove)	C++14	100 / 100	20 ms	2864 KiB

stove

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

#define int long long
typedef pair<int, int> pii;

const int MXN = 200005;
int a[MXN], d[MXN], n, k, ans;

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> k;
    for (int i = 0; i < n; i++) cin >> a[i];
    for (int i = 1; i < n; i++) d[i - 1] = a[i] - a[i - 1] - 1;
    sort(d, d + n - 1);
    ans = n;
    for (int i = 0; i < (n - k); i++) ans += d[i];
    cout << ans << endl;
    return 0;
}

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