Submission #886775

#	Time	Username	Problem	Language	Result	Execution time	Memory
886775		Maite_Morale	Stove (JOI18_stove)	C++14	100 / 100	16 ms	4828 KiB

stove

#include<bits/stdc++.h>
#define F first
#define S second
#define MAX 500005
#define oo 1e18
#define mod 1000000007
#define fast_in ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);cout.setf(ios::fixed);cout.precision(0);
using namespace std;
typedef long long ll;
#define pll pair<ll , ll>
#define vll vector<ll>
#define vvll vector<vll>
#define vpll vector<pll>
 
ll n,a[MAX],k; 
int main(){
    fast_in
    cin>>n>>k;vll v;k--;
    for(int i=0;i<n;i++){
        cin>>a[i];
        if(i>0)v.push_back(-(a[i]-a[i-1]-1));
    }sort(v.begin(),v.end());
    ll r=a[n-1]+1-a[0];k=min(k,(ll)v.size());
    for(int i=0;i<k;i++){
        r+=v[i];
    }cout<<r;
return 0;
}

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