Submission #41069

#	Time	Username	Problem	Language	Result	Execution time	Memory
41069		kdh9949	Stove (JOI18_stove)	C++14	100 / 100	24 ms	1096 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