Submission #1033658

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033658		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	17 ms	2404 KiB

stove

#include<bits/stdc++.h>
using namespace std;
using ll=long long;
using ld=long double;
using pear=pair<ll, ll>;
#define v vector
#define fi first
#define se second
#define nl << '\n'
#define uk << ' '
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
//	freopen(".inp","r",stdin);
//	freopen(".out","w",stdout);
	cin.exceptions(cin.failbit);
	ll n, k;
	cin >> n >> k;
	ll i;
	vector<ll> a(n), gap;
	for(i=0; i<n; i++){
		cin >> a[i];
	}
	for(i=1; i<n; i++){
		gap.push_back(a[i]-a[i-1]);
	}
	sort(gap.rbegin(), gap.rend());
	ll ans=a[n-1]-a[0]+1;
	for(i=0; i<k-1; i++){
		ans-=gap[i]-1;
	}
	cout << ans;
}

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