Submission #1106061

#	Time	Username	Problem	Language	Result	Execution time	Memory
1106061		lufychop	Stove (JOI18_stove)	C++14	100 / 100	39 ms	3272 KiB

stove

#include <bits/stdc++.h>

using namespace std;

long long t[100001];

int main(void)
{
	long long n,k,ans;
	cin>>n>>k;
	k--;
	priority_queue<long long> q;
	for(int i=0;i<n;i++)
	{
		cin>>t[i];
	}
	q.push(0);
	for(int i=1;i<n;i++)
	{
		q.push(t[i]-t[i-1]-1);
	}
	ans=t[n-1]-t[0]+1;
	while(k--)
	{
		ans=ans-q.top();
		q.pop();
	}
	cout<<ans;
	return 0;
}
/*
3 3
1
3
6

1  0
3  1
6  2

10 5
1
2
5
6
8
11
13
15
16
20

1  0  1->3
2  0
5  2  5->9
6  0
8  1
11 2 11->14
13 1
15 1 15->17
16 0
20 3 20->21
*/

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