Submission #469881

#	Time	Username	Problem	Language	Result	Execution time	Memory
469881		IvnF	Stove (JOI18_stove)	C++14	100 / 100	43 ms	3216 KiB

stove

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define ull unsigned long long
#define fi first
#define se second
#define ld long double
ll n, k, arr[100005];

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	cin >> n >> k;
	for(int i=1;i<=n;++i){
		cin >> arr[i];
	}
	priority_queue<ll>pq;
	for(int i=2;i<=n;++i){
		pq.push((arr[i]-1)-(arr[i-1]+1)+1);
	}
	ll sums=arr[n]-arr[1]+1;
	k--;
	while(!pq.empty() && k){
		sums-=pq.top();
		pq.pop();
		k--;
	}
	cout << sums << '\n';
}

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