Submission #1163412

#	Time	Username	Problem	Language	Result	Execution time	Memory
1163412		canhnam357	Stove (JOI18_stove)	C++20	100 / 100	15 ms	2376 KiB

stove

// source problem : 
#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(), x.end()
#define int long long
#define lb lower_bound
#define ub upper_bound
#define MASK(i) (1LL << (i))
const int inf = 1e18;
void ckmax(int& f, int s)
{
    f = (f > s ? f : s);
}
void ckmin(int& f, int s)
{
    f = (f < s ? f : s);
}
int32_t main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n, k;
    cin >> n >> k;
    vector<int> a(n);
    for (int &i : a) cin >> i;
    sort(all(a));
    k--;
    vector<int> d;
    for (int i = 1; i < n; i++) d.push_back(a[i] - a[i - 1] - 1);
    sort(d.rbegin(), d.rend());
    int ans = a[n - 1] - a[0] + 1;
    for (int i = 0; i < k; i++) ans -= d[i];
    cout << ans;
    return 0;
}

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