Submission #593495

#	Time	Username	Problem	Language	Result	Execution time	Memory
593495		starchan	Stove (JOI18_stove)	C++17	100 / 100	22 ms	2896 KiB

stove

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define in pair<int, int>
#define f first
#define s second
#define pb push_back
#define pob pop_back
#define INF (int)1e17
#define MX (int)3e5+5
#define fast() ios_base::sync_with_stdio(false); cin.tie(NULL)
signed main()
{
	fast();
	int n, k;
	cin >> n >> k;
	vector<int> t(n+1);
	for(int i = 1; i <= n; i++)
		cin >> t[i];
	vector<int> diff(n);
	for(int i = 1; i < n; i++)
		diff[i] = t[i+1]-t[i]-1;
	int ans = t[n]-t[1]+1;
	diff[0] = INF;
	sort(diff.rbegin(), diff.rend());
	for(int i = 1; i < k; i++)
		ans-=diff[i];
	cout << ans;
	return 0;
}	

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