Submission #890145

#	Time	Username	Problem	Language	Result	Execution time	Memory
890145		MercubytheFirst	Stove (JOI18_stove)	C++17	100 / 100	15 ms	3164 KiB

stove

#include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
using ll = long long;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll n, k;
    cin >> n >> k;
    vector<ll> v(n + 1);
    for(ll i = 1; i <= n; ++i)
        cin >> v[i];
    vector<ll> diff(n);
    for(ll i = 1; i < n; ++i)
        diff[i] = v[i + 1] - v[i] - 1;
    sort(diff.begin() + 1, diff.end(), greater<ll>());
    ll ans = n;
    for(ll i = k; i < n; ++i){
        ans += diff[i];
    }
    cout << ans << endl;
}

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