Submission #887904

#	Time	Username	Problem	Language	Result	Execution time	Memory
887904		oblantis	Stove (JOI18_stove)	C++17	100 / 100	15 ms	1884 KiB

stove

#include <bits/stdc++.h>
#define all(v) v.begin(), v.end()
#define pb push_back
#define ss second
#define ff first
#define vt vector
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<double, int> pdi;
const int inf = 1e9 + 10000;
const int mod = 1e9+7;
const int maxn = 5e5 + 12;
void solve() {
	int n, k;
	cin >> n >> k;
	int t[n], p[n];
	k = n - k;
	int ans = n;
	for(int i = 0; i < n; i++) {
		cin >> t[i];
		if(i)p[i] = t[i] - t[i - 1] - 1;
	}
	sort(p + 1, p + n);
	for(int i = 1; i <= k; i++) {
		ans += p[i];
	}
	cout << ans;
}
int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	int times = 1;
	//cin >> times;
	for(int i = 1; i <= times; i++) {
		solve();
	}
	return 0;
}

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