Submission #922562

#	Time	Username	Problem	Language	Result	Execution time	Memory
922562		ArgoCahaya	Stove (JOI18_stove)	C++14	0 / 100	1 ms	444 KiB

stove

#include<bits/stdc++.h>
#define ll long long
#define endl "\n"
#define fi first
#define se second
#define pb push_back
#define pll pair<long long, long long>
#define loop(i,n) for(int i=1;i<=n;i++)
#define loop0(i,n) for(int i=0;i<n;i++)
using namespace std;

//pbds template
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//using namespace __gnu_pbds;

//template <class T>
//using ordered_set = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;

void solve(){
	ll n,k;
	cin >> n >> k;
	priority_queue<ll> pq;
	ll prev = -1;
	for(int i=1;i<=n;i++){
		ll a;
		cin >> a;
		if(prev!=-1) pq.push((a-prev));
		prev = a;
	}
//	cout << "DEBUG" << endl;
	ll ans = prev;
	ll turn = k-1;
	while(turn>0){
		ans -= pq.top()-1;
		pq.pop();
		turn--;
	}
	cout << ans << endl;
}

int main(){
//	ios::sync_with_stdio(false);
//	cin.tie(0);
//	cout.tie(0);
	int tc = 1;
//	cin >> tc;
	while(tc--){
	   solve();
	}
}

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50