Submission #1017885

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017885		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	15 ms	3292 KiB

stove

#include <bits/stdc++.h>
#define pii pair <int, int>
#define pb push_back
#define pp pop_back
#define int int64_t
#define sc second
#define fr first
using namespace std;
const int T=1e18+7, K=1e9+7;
signed main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n, k, i, p;
	cin >> n >> k;
	vector <int> v(n+1), s;
	cin >> v[1];
	for (i=2; i<=n; i++) {
		cin >> v[i];
		s.pb(v[i]-1-v[i-1]);
	}
	p=v[n]+1-v[1];
	sort(s.rbegin(), s.rend());
	for (i=0; i<k-1; i++) {
		p-=s[i];
	}
	cout << p;
}

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