Submission #1018434

#	Time	Username	Problem	Language	Result	Execution time	Memory
1018434		Bekbolot_009	Stove (JOI18_stove)	C++14	100 / 100	15 ms	3292 KiB

stove

#include <bits/stdc++.h>
#define int long long
using namespace std;
#define boost ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
const int N = 1e6 + 12, mod = 1e16 + 7;
signed main () {
	boost
	int n, k;
	cin >> n >> k;
	k -= 1;
	vector<int>v(n + 1);
	for(int i = 1; i <= n; ++i){
		cin >> v[i];
	}
	vector<int>just;
	for(int i = 2; i <= n; ++i){
		just.push_back(v[i] - v[i - 1] - 1);
	}
	sort(just.rbegin(), just.rend());
	int cnt = 0;
	for(int i = 0; i < k; ++i){
		cnt += just[i];
	}
	cout << v[n] - v[1] - cnt + 1;
}

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