Submission #1179685

#	Time	Username	Problem	Language	Result	Execution time	Memory
1179685		anteknne	Stove (JOI18_stove)	C++20	100 / 100	14 ms	2244 KiB

stove

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;

#define pb push_back
#define pii pair<int, int>
#define pll pair<ll, ll>
#define st first
#define nd second
#define ordered_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
#define debug false

const int MAXN = 100 * 1000;
ll a[MAXN];
vector<ll> v;

int main () {
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    int n, k;
    cin >> n >> k;
    ll wyn = n;
    for (int i = 0; i < n; i ++) {
        cin >> a[i];
    }

    for (int i = 1; i < n; i ++) {
        v.pb(a[i] - a[i - 1] - 1);
    }

    sort(v.begin(), v.end());

    for (int i = 0; i < n - k; i ++) {
        wyn += v[i];
    }

    cout << wyn << "\n";

    return 0;
}

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