Submission #1237601

#	Time	Username	Problem	Language	Result	Execution time	Memory
1237601		lunarecho	Stove (JOI18_stove)	C++20	100 / 100	15 ms	2696 KiB

stove

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

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n,k;
    cin>>n>>k;
    vector<ll> t(n);
    for(int i=0;i<n;++i)
        cin>>t[i];
    if(n <= k)
    {
        cout<<n<<'\n';
        return 0;
    }
    vector<ll> diff;
    for(int i=1;i<n;++i)
        diff.push_back(t[i] - (t[i - 1] + 1));
    sort(diff.begin(),diff.end());
    ll ans = n;
    for(int i=0;i<n - k;++i)
        ans += diff[i];
    cout<<ans<<'\n';

    return 0;
}

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