Submission #1225171

#	Time	Username	Problem	Language	Result	Execution time	Memory
1225171		wedonttalkanymore	Stove (JOI18_stove)	C++20	100 / 100	34 ms	2240 KiB

stove

#include <bits/stdc++.h>
using namespace std;
#define int long long
int n, k, a[100005];
vector <int> range;
signed main()
{
	cin >> n >> k;
	for (int i = 1; i <= n; i++)
	{
		cin >> a[i];
	}
	sort(a + 1, a + n + 1);
	int needed = a[n] - a[1] + 1;
	for (int i = 2; i <= n; i++)
	{
		range.push_back(a[i] - a[i - 1] - 1);
	}
	sort(range.begin(), range.end(), greater<int>());
	int sum = 0;
	for (int i = 0; i < k - 1; i++)
	{
		sum += range[i];
	}
	cout << needed - sum;
	return 0;
}

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