Submission #870991

#	Time	Username	Problem	Language	Result	Execution time	Memory
870991		marcid	Stove (JOI18_stove)	C++17	100 / 100	14 ms	1808 KiB

stove

#ifndef LOCAL
#pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
#endif
#include <bits/stdc++.h>
using namespace std;

int main() {
	cin.tie(0)->sync_with_stdio(false); cout.tie(0);
	int n, k; cin >> n >> k;
	int a[n];
	for (int i = 0; i < n; i++) {
		cin >> a[i];
	}
	for (int i = 0; i < n-1; i++) {
		a[i]=a[i+1]-a[i]-1;
	}
	int sum = n;
	sort(a, a+n);
	for (int i = 0; i < n-k; i++) {
		sum += a[i];
	} cout << sum;
}

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