Submission #1112843

#	Time	Username	Problem	Language	Result	Execution time	Memory
1112843		Pwo	Stove (JOI18_stove)	C++17	100 / 100	17 ms	3396 KiB

stove

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

int32_t main() {
	ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
	int n, k; cin >> n >> k;
	int a[n]; for (int i = 0; i < n; i++) cin >> a[i];
	vector<int> diff;
	for (int i = 1; i < n; i++) diff.push_back(a[i] - a[i - 1]);
	sort(diff.begin(), diff.end(), greater<int>());
	
	int ans = a[n - 1] - a[0] + 1;
	for (int i = 0; i < k - 1; i++) ans -= diff[i] - 1;
	
	cout << ans;
}

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