Submission #548836

#	Time	Username	Problem	Language	Result	Execution time	Memory
548836		Kipras	Stove (JOI18_stove)	C++17	100 / 100	46 ms	2636 KiB

stove

#include <bits/stdc++.h>

typedef long long ll;

using namespace std;

int main()
{

    ios_base::sync_with_stdio();cin.tie(nullptr);

    ll n, k;
    cin>>n>>k;

    vector<ll> a;

    for(int i = 0; i < n; i++){
        ll aa;
        cin>>aa;
        a.push_back(aa);
    }

    vector<ll> s;

    for(int i = 0; i < n-1; i++){
        s.push_back(a[i+1]-a[i]-1);
    }

    ll all=a[n-1]+1-a[0];

    if(k>=n)cout<<n;
    else{

        sort(s.begin(), s.end());
        reverse(s.begin(), s.end());

        for(int i = 0; i < k-1; i++){
                //cout<<s[i]<<endl;
                all-=s[i];
        }

        cout<<all;

    }

    return 0;
}

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