Submission #1114763

#	Time	Username	Problem	Language	Result	Execution time	Memory
1114763		Isa2011	Stove (JOI18_stove)	C++14	100 / 100	26 ms	2040 KiB

stove

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

signed main() {
	ios::sync_with_stdio(NULL);
	cin.tie(NULL);
	cout.tie(NULL);
	
	int n,k;
	cin >> n >> k;
	vector<int> a(n);
	for (int i = 0; i < n; i++) cin >> a[i];
	sort(a.begin(), a.end());
	int h = n - k;
	if (n == k) cout << n;
	else if (k == 1) cout << a[n-1];
	else 
	{
		vector<int> l(n-1);
		for (int i = 0; i < n-1; i++) l[i] = a[i+1] - a[i];
		sort(l.begin(), l.end());
		int ans = n - h;
		for (int i = 0; i < h; i++) ans += l[i];
		cout << ans;
	}	
}

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