Submission #416790

#	Time	Username	Problem	Language	Result	Execution time	Memory
416790		minzoa	Stove (JOI18_stove)	C++14	100 / 100	24 ms	1672 KiB

stove

#include <bits/stdc++.h>
using namespace std;
const int N = 100005;
int n,k,a[N],r;

int main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);
	cin >> n >> k;
	for(int i=0; i<n; i++)cin>>a[i];
	r=a[n-1]-a[0]+1;
	adjacent_difference(a,a+n,a);
	sort(a+1,a+n, greater<int>());
	for(int i=1; i < k; i++) r -= (a[i] - 1);
	cout << r << endl;
}

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