Submission #1241913

#	Time	Username	Problem	Language	Result	Execution time	Memory
1241913		quanaskinger	Stove (JOI18_stove)	C++17	100 / 100	28 ms	2312 KiB

stove

#include <bits/stdc++.h>
using namespace std;
long long n, k;
int main() {
	cin >> n >> k;
	long long arr[n + 5];
	vector<long long> p;
	for (long long i = 1; i <= n; i++) {
		cin >> arr[i];
		if (i >= 2) p.push_back(arr[i] - arr[i - 1] - 1);
	}
	k--;
	sort(p.begin(), p.end(), greater<long long>());
	long long res = arr[n] + 1 - arr[1];
	for (long long i = 0; i < min(k, n); i++) res -= p[i];
	cout << res;
}

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