Submission #91333

#	Time	Username	Problem	Language	Result	Execution time	Memory
91333		aminra	Stove (JOI18_stove)	C++14	100 / 100	22 ms	10980 KiB

stove

//tavakol bar khoda
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
const int MAXN = (int)1e5 + 7;
const int MOD = (int)1e9 + 7;
const int infint = (int)1e8 + 3;
const ll inf = (ll)1e18;
int n, k, a[MAXN];
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
	cin >> n >> k;
	for (int i = 0; i < n; i++)	
		cin >> a[i];
	a[n] = a[n - 1];
	ll ans = k + a[n] - a[0];
	vector<ll> v;
	for (int i = 0; i < n; i++)
		v.push_back(a[i] - a[i + 1]);
	sort(v.begin(), v.end());
	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