Submission #529989

#	Time	Username	Problem	Language	Result	Execution time	Memory
529989		nguyentunglam	Stove (JOI18_stove)	C++14	100 / 100	45 ms	2868 KiB

stove

#include<bits/stdc++.h>
#define forin(i,a,b) for(int i=a; i <= b; i++)
#define forde(i, a, b) for(int i = a; i <= b; i--)
using namespace std;
const int N = 1e5 + 10; 
long long a[N], b[N];
int main()
{
	int n, k; cin >> n >> k;
	forin(i, 1, n) cin>>a[i];
	long long res = a[n] + 1 - a[1]; 
	forin(i, 2, n) b[i-1] = a[i] - a[i-1];
	sort (b + 1, b + n, greater<int>());
	k = min (k, n ) ;
	forin(i, 1, k-1 ) res -= b[i] - 1; 
	cout << res;
}

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