Submission #354906

#	Time	Username	Problem	Language	Result	Execution time	Memory
354906		SeDunion	Stove (JOI18_stove)	C++17	100 / 100	22 ms	2284 KiB

stove

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const int N = 1e6 + 66;

int a[N], d[N], Ans, n, k;

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0), cout.tie(0);
	cin >> n >> k;
	for (int i = 1 ; i <= n ; ++ i) {
		cin >> a[i];
		if (i > 1) d[i] = a[i] - a[i - 1] - 1;
	}
	Ans = a[n] - a[1] + 1;
	sort(d + 2, d + 1 + n);
	for (int i = n ; k > 1 ; -- i, -- k) {
		Ans -= max(0, d[i]);
	}
	cout << Ans;
}

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