Submission #842265

#	Time	Username	Problem	Language	Result	Execution time	Memory
842265		erering	Stove (JOI18_stove)	C++17	100 / 100	16 ms	2268 KiB

stove

#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define pb push_back
#define ll long long
#define int ll
const long long inf=1e18;
const int MOD=1e9+7;
const int N=2e5+5;
signed main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    int n,k; cin>>n>>k;
    vector<int> v;
    int a[n];
    for(int i=0;i<n;i++){
      cin>>a[i];
      if(i>0)v.pb(a[i]-a[i-1]-1);
    }
    int ans=a[n-1]-a[0]+1;
    sort(v.begin(),v.end());
    for(int i=n-2;i>=n-k;i--)ans-=v[i];
    cout<<ans;
}

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