Submission #978269

#	Time	Username	Problem	Language	Result	Execution time	Memory
978269		wateronenn	Stove (JOI18_stove)	C++14	20 / 100	1 ms	600 KiB

stove

#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int N = 1e5+9;
ll arr[N];
int main(){
    cin.tie(0)->sync_with_stdio(false);
    int n,k;
    cin>>n>>k;
    for(int i=1;i<=n;i++){
        cin>>arr[i];
    }
    
    priority_queue<ll> pq;
    sort(arr+1,arr+n+1);
    ll all = arr[n]+1 - arr[1];
    for(int i=1;i<=n;i++) {
        //cout<<arr[i]-arr[i-1]-1<<" ";
         pq.push(arr[i]-arr[i-1]-1);
    }
    for(int i=1;i<=k-1;i++){
        all-=pq.top();
        pq.pop();
    }
    cout<<all;
    return 0;
}
/*
3 1
1
3
6
*/

• Subtask 1: 20 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50