Submission #1285965

#	Time	Username	Problem	Language	Result	Execution time	Memory
1285965		harryleee	Stove (JOI18_stove)	C++20	100 / 100	29 ms	5508 KiB

stove

#include<bits/stdc++.h>
using namespace std;
const int maxn = 1e5;
multiset<long long> s;
int n, k, a[maxn + 1];

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> n >> k;
    a[0] = -1e9;
    for (int i = 1; i <= n; ++i){
        cin >> a[i];
        s.insert(a[i] - a[i - 1]);
    }

    long long res = k;
    n -= k;
    while(n--){
        res += *s.begin();
        s.erase(s.begin());
    }
    cout << res;
}

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