Submission #638011

#	Time	Username	Problem	Language	Result	Execution time	Memory
638011		kdn5549	Stove (JOI18_stove)	C++17	100 / 100	21 ms	2424 KiB

stove

#include<bits/stdc++.h>
#define ep emplace
#define eb emplace_back
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;
typedef pair<int,int>pi;
typedef pair<ll,ll>pl;
const int inf=1e9+7;
const ll INF=1e18;

int n,k;

int main()
{
    ios::sync_with_stdio(false); cin.tie(NULL);
    cin>>n>>k;
    vector<int> v,V;
    int ret=n;
    for(int i=0;i<n;i++)
    {
        int x; cin>>x;
        v.eb(x);
    }
    for(int i=1;i<n;i++)
    {
        V.eb(v[i]-v[i-1]-1);
    }
    sort(all(V));
    for(int i=0;i<n-k;i++)
    {
        ret+=V[i];
    }
    cout<<ret;
}

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