Submission #1248182

#	Time	Username	Problem	Language	Result	Execution time	Memory
1248182		ziyad_alharbi	Stove (JOI18_stove)	C++20	100 / 100	32 ms	5828 KiB

stove

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
#define int long long
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n,k;
    cin>>n>>k;
    int a[n],ans=k;
    multiset<int>st;
    for(int x=0;x<n;x++)
    {
        cin>>a[x];
        if(x)st.insert(a[x]-a[x-1]);
    }
    for(int x=0;x<n-k;x++)
    {
        ans+=*st.begin();
        // cout<<*st.begin()<<'\n';
        st.extract(st.begin());
    }
    cout<<ans<<'\n';
}

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