Submission #1217205

#	Time	Username	Problem	Language	Result	Execution time	Memory
1217205		gabyferaq	Stove (JOI18_stove)	C++20	In queue	0 ms	0 KiB

stove

#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
void solve()
{
    ll n,k; cin>>n>>k;
    vector<ll> vec(n), t(n-1);
    cin>>vec[0];
    for(int i=1;i<n;i++)
    {
        cin>>vec[i];
        t[i-1]=vec[i]-vec[i-1]-1;
    }
    ll sum=0;
    sort(t.begin(),t.end());
    for(int i=0;i<=n-k-1;i++)
    {
        sum+=t[i];
    }
    cout<<n+sum<<endl;
}
int main()
{
    solve();
}