Submission #1092456

#	Time	Username	Problem	Language	Result	Execution time	Memory
1092456		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	43 ms	8444 KiB

stove

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define stdI freopen("input.txt", "r", stdin);
#define stdO freopen("output.txt", "w", stdout);
#define all(x) x.begin(), x.end()
#define mp(x, y) make_pair(x, y)
#define int long long
#define F first
#define S second
using namespace std;
using namespace __gnu_pbds;

typedef tree<int,
    null_type,less<int>,
    rb_tree_tag,
    tree_order_statistics_node_update> ordered_set;

typedef pair<int, int> pii;

const int MAXN = 2e5 + 100, INF = 1e18, MOD = 1e9 + 7;

void solve()
{
    vector<pii> v;
    int n, k;
    cin >> n >> k;
    int a[n];
    for(int i = 0; i < n; i++)
    {
        cin >> a[i];
    }
    sort(a, a + n);
    for(int i = 1; i < n; i++)
    {
        v.push_back(mp(a[i] - a[i - 1] - 2, i));
    }
    set<int> s; k--;
    sort(all(v));
    int ans = 0; s.insert(0);
    while(v.size() > 0 && k > 0)
    {
        pii x = v.back(); v.pop_back(); k--;
        ans += x.F;
        s.insert(x.S);
    }
    cout << a[n - 1] + 2 - a[0] - s.size() - ans << "\n";
}

int32_t main()
{
    IOS;
    int t = 1;
    //cin >> t;
    while(t--)
    {
        solve();
    }
    return 0;
}

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