Submission #360165

#	Time	Username	Problem	Language	Result	Execution time	Memory
360165		jesus_coconut	Stove (JOI18_stove)	C++17	100 / 100	21 ms	2304 KiB

stove

#include <bits/stdc++.h>

using namespace std;

int n, k;
vector<int> v;
void read() {
	cin >> n >> k;
	v.resize(n);
	for (auto &a : v) cin >> a;
}

void solve() {
	int ans = v.back() - v.front() + 1;
	vector<int> dist(n - 1);
	for (int i = 0; i < n - 1; ++i) {
		dist[i] = v[i + 1] - v[i] - 1;
	}
	sort(begin(dist), end(dist), greater<>());
	for (int i = 0; i < k - 1; ++i) {
		ans -= dist[i];
	}
	cout << ans << '\n';
}

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);

	read();
	solve();

	return 0;
}

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