Submission #1017493

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017493		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	14 ms	3324 KiB

stove

#include "bits/stdc++.h"
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ordered_set tree <int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
#define nemeshay ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define allr(pon) pon.rbegin(), pon.rend()
#define all(pon) pon.begin(), pon.end()
#define nosolve cout << "-1\n"
#define YES cout << "YES\n"
#define Yes cout << "Yes\n"
#define pii pair <int, int>
#define OK cout << "OK\n"
#define Ok cout << "Ok\n"
#define NO cout << "NO\n"
#define No cout << "No\n"
#define pf push_front
#define int long long
#define pb push_back
#define sigma signed
#define sc second
#define fr first
using namespace __gnu_pbds;
using namespace std;
const int N = 1e6 + 20, INF = 1e10 + 7;
int a[N], pref[N];
sigma main(){
    nemeshay
    int n, k, ans;
    cin >> n >> k;
    vector <int> pon;
    for (int i = 0; i < n; i++) cin >> a[i];
    ans = a[n - 1] + 1 - a[0];
    if (k == 1) {
        cout << ans;
        return 0;
    }
    if (k == n) {
        cout << n;
        return 0;
    }
    for (int i = 1; i < n; i++) pon.pb(a[i] - a[i - 1] - 1);
    sort (pon.rbegin(), pon.rend());
    for (int i = 0; i < k -1; i++) ans -= pon[i];
    cout << ans;
}

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