Submission #818747

#	Time	Username	Problem	Language	Result	Execution time	Memory
818747		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	19 ms	2260 KiB

stove

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
const ll MAXN = 1e5 + 5;

ll n, k;
ll a [MAXN];
priority_queue <ll, vector <ll> , greater <ll> > pq;

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> k;
    ll ans = n;
    for(ll i = 1; i <= n; i++){
        cin >> a[i];
    }
    for(ll i = 1; i <= n-1; i++){
        pq.push(a[i+1] - (a[i]+1));
    }
    ll sambung = n - k;
    while(sambung--){
        ans += pq.top();
        pq.pop();
    }
    cout << ans << endl;
}

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