Submission #333736

#	Time	Username	Problem	Language	Result	Execution time	Memory
333736		bigDuck	Stove (JOI18_stove)	C++14	100 / 100	96 ms	6132 KiB

stove

#include<bits/stdc++.h>
using namespace std;
#define INIT  ios_base :: sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define mp make_pair
#define pb push_back
#define ft first
#define sc second
#define ll long long
#define pii pair<int, int>
#define count_bits __builtin_popcount
#define int ll

int t, n, m, k, a[300010], q, l, r;


int32_t main(){
INIT
cin>>n>>k;

int ft=0, lt=0;
multiset<int> ms;

for(int i=1; i<=n; i++){
    cin>>t;

    if(lt>0){
        ms.insert(t-lt);
    }

    if(!ft){
        ft=t;
    }
    lt=t+1;
}

int free=0;
if(!ms.empty()){
auto it=ms.end();
it--;
k--;
while(k>0 ){
    k--;
    free+=*it;
    if(it==ms.begin()){break;}
    it--;
}

}

cout<<(lt-ft-free);


return 0;
}

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