Submission #1010304

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010304		THXuan	Stove (JOI18_stove)	C++14	100 / 100	16 ms	2268 KiB

stove

#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <set>
#include <map>
#define INF 1e9
using namespace std;
typedef long long ll;

void solve()
{
	int n, k; cin >> n >> k;
	vector<ll>v(n), a;
	for (int i = 0; i < n; i++) cin >> v[i];
	for (int i = 1; i < n; i++) a.push_back(v[i] - (v[i - 1] + 1));
	sort(a.rbegin(), a.rend());
	ll ans = (v[n - 1] - v[0]) + 1;
	for (int i = 0; i < k - 1; i++) ans -= a[i];
	cout << ans << "\n";
}

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int t = 1;// cin>>t;
	while (t--) solve();
	return 0;
}

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