Submission #536134

#	Time	Username	Problem	Language	Result	Execution time	Memory
536134		Blnkhole224	Stove (JOI18_stove)	C++14	100 / 100	18 ms	2792 KiB

stove

#include <bits/stdc++.h>
#define fori(i,a,b) for(long i=a;i<=b;i++)
using namespace std;
typedef long long ll;
ll const N=1e5+10;
ll a[N],b[N];
ll n,d,res,k;
void speed()
{    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
}
int main()
{
   speed();
   cin >> n >> k;
   k=k-1;
   fori(i,1,n)
   {
       cin >> a[i];
   }
   fori(i,2,n)
   {
       b[i]=a[i]-a[i-1];
   }
   res=a[n]-a[1]+1;
   sort(b+1,b+n+1,greater<int>());
   for(long i=1;i<=k;i++)
   {
       res-=b[i]-1;
   }
   cout << res;
}

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