Submission #152039

#	Time	Username	Problem	Language	Result	Execution time	Memory
152039		AS82	Stove (JOI18_stove)	C++14	100 / 100	27 ms	3060 KiB

stove

//In the name of Allah
//Ya Ali!
#include <bits/stdc++.h>

using namespace std;
typedef long long ll ;

const ll maxn = 1000 * 1000 ;
const ll INF = 1e18 ;

#define f first
#define s second

ll n , k , a[maxn] ;
vector<ll> v ;

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

cin >> n >> k ;
for(int i = 1 ; i <= n ; i ++){
    cin >> a[i] ;
    if(i > 1)v.push_back(a[i]-a[i-1]-1) ;
}
sort(v.begin( ) , v.end()) ;

ll sum = n ;
for(int i = 0 ; i < n-k ; i ++){
 sum += v[i] ;
}
cout << sum ;
 return 0;
}
/*
                  _     _   __
            /_\  (_    (_)  __)
           /   \  _) . (_) (__
*/

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