Submission #1229055

#	Time	Username	Problem	Language	Result	Execution time	Memory
1229055		tktktktk	Stove (JOI18_stove)	C++20	100 / 100	13 ms	1864 KiB

stove

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


int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    ll n,k;
    cin>>n>>k;
    ll a[n+5];
    ll t[n+5];
    for (ll i=1;i<=n;i++) cin>>t[i];
    if (n<=k) cout<<n;
    else
    {
        ll kq=0;
        for (ll i=1;i<n;i++) a[i]=t[i+1]-t[i]-1;
        sort(a+1,a+n);
        for (ll i=1;i<=n-k;i++) kq+=a[i];
        cout<<kq+n;
    }
}

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