Submission #1147677

#	Time	Username	Problem	Language	Result	Execution time	Memory
1147677		Ludissey	Stove (JOI18_stove)	C++20	100 / 100	13 ms	1864 KiB

stove

#include <bits/stdc++.h>
#define int long long
#define sz(a) (int)a.size()
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
 
using namespace std;

signed main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
    int n,k; cin >> n >> k;
    vector<int> a(n);
    vector<int> d(n-1);
    for (int i = 0; i < n; i++) cin >> a[i];
    sort(all(a));
    int sum=a[n-1]-a[0]+1;
    for (int i = 0; i < n-1; i++) {
        d[i]=a[i+1]-a[i];
    }
    sort(rall(d));
    for (int i = 0; i < min(sz(d),k-1); i++)
    {
        sum-=d[i]-1;
    }
    cout << sum << "\n";
    return 0;
}

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