Submission #223562

#	Time	Username	Problem	Language	Result	Execution time	Memory
223562		Dilshod_Imomov	Stove (JOI18_stove)	C++17	100 / 100	37 ms	4600 KiB

stove

# include <bits/stdc++.h>
# define speed ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
# define int long long
  
using namespace std;
  
const int N = 2e3 + 7;

int32_t main() {
    speed;
    int n, k;
    cin >> n >> k;

    vector < int > t(n), use(n);
    vector < pair < int, int > > vc;

    for ( int i = 0; i < n; i++ ) {
    	cin >> t[i];
    }
    for ( int i = 1; i < n; i++ ) {
    	vc.push_back( { t[i] - t[i - 1], i } );
    }
    sort( vc.rbegin(), vc.rend() );

    for ( int i = 0; i < k - 1; i++ ) {

    	use[ vc[i].second ] = 1;
    }
    int p = t[0], ans = 0;

    for ( int i = 0; i < n; i++ ) {

    	if ( use[i] ) {
    		ans += (t[i - 1] + 1) - p;
    		p = t[i];
    	}
    }
    ans += (t[n - 1] + 1) - p;

    cout << ans;
}

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