Submission #699571

#	Time	Username	Problem	Language	Result	Execution time	Memory
699571		khshg	Stove (JOI18_stove)	C++14	100 / 100	53 ms	2044 KiB

stove

#include<bits/stdc++.h>
using namespace std;

int main() {
	int n, k;
	cin >> n >> k;
	vector<int> a(n);
	vector<int> b(n - 1);
	for(int i = 0; i < n; ++i) {
		cin >> a[i];
		if(i) {
			b[i - 1] = a[i] - a[i - 1] - 1;
		}
	}
	sort(rbegin(b), rend(b));
	int ans = a[n - 1] - a[0] + 1;
	for(int i = 0; i < k - 1; ++i) {
		ans -= b[i];
	}
	cout << ans << '\n';
}

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