Submission #636430

#	Time	Username	Problem	Language	Result	Execution time	Memory
636430		gun_gan	Stove (JOI18_stove)	C++17	100 / 100	18 ms	1876 KiB

stove

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

int main() 
{
	cin.tie(0); ios_base::sync_with_stdio(0);

	int n, k;
	cin >> n >> k;

	vector<int> v;
	int prev = -1;
	long long ans = 0;
	for(int i = 0; i < n; i++) {
		int x;
		cin >> x;

		if(prev != -1) v.push_back(x - prev);
		if(i == 0) ans -= x;
		if(i == n - 1) ans += x + 1;
		prev = x + 1;
	}

	sort(v.rbegin(), v.rend());
	for(int i = 0; i < k - 1; i++) ans -= v[i];

	cout << ans;
}

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