Submission #958828

#	Time	Username	Problem	Language	Result	Execution time	Memory
958828		vjudge1	Stove (JOI18_stove)	C++17	100 / 100	18 ms	2140 KiB

stove

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector <ll>;

int main () {
    cin.tie(nullptr) -> sync_with_stdio(false);
    ll n, k;
    cin >> n >> k;
    vll ve(n);
    for (ll &i : ve) cin >> i;
    sort(ve.begin(), ve.end());
    vll diff(n-1);
    for (ll i = 1; i < n; i++)
        diff[i-1] = ve[i]-ve[i-1]-1;
    sort(diff.begin(), diff.end());
    ll ans = n;
    k = n-k;
    for (ll i = 0; i < k; i++) {
        ans += diff[i];
    }
    cout << ans << '\n';
    return 0;
}

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