Submission #916474

#	Time	Username	Problem	Language	Result	Execution time	Memory
916474		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	14 ms	1372 KiB

stove

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define pb push_back
#define pii pair<int, int>
#define pll pair<ll, ll>
#define mll map<ll, ll>
#define fi first
#define se second

int n, k, t;
int a[200001], dif[200001];

int main() {
	fastio;
	cin >> n >> k;
	cin >> a[1];
	for (int i = 2; i <= n; i++) {
		cin >> a[i];
		dif[i] = a[i]-a[i-1];
	}
	t = a[n]-a[1]+1;
	sort(dif+1, dif+n+1);
	for (int i = n; (i >= 1 && k > 1); i--, k--) {
		t -= (dif[i]-1);
	}
	cout << t << endl;
}

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