Submission #379191

#	Time	Username	Problem	Language	Result	Execution time	Memory
379191		penguinhacker	Stove (JOI18_stove)	C++14	100 / 100	25 ms	2156 KiB

stove

// source: https://oj.uz/problem/view/JOI18_stove
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ar array

int n, k, a[100000], b[100000];

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> n >> k;
	for (int i = 0; i < n; ++i)
		cin >> a[i];
	for (int i = 0; i + 1 < n; ++i)
		b[i] = a[i + 1] - a[i];
	sort(b, b + n - 1);
	int ans = k + accumulate(b, b + n - k, 0);
	cout << ans;
	return 0;
}

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