Submission #329826

#	Time	Username	Problem	Language	Result	Execution time	Memory
329826		Sho10	Stove (JOI18_stove)	C++14	100 / 100	26 ms	3308 KiB

stove

#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho10
#define ll long long
#define double long double
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define all(a) (a).begin(), (a).end()
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define pi pair
#define rc(s) return cout<<s,0
#define endl '\n'
#define mod (10*10*10*10*10*10*10*10*10+7)
#define PI 3.14159265359
#define MAXN 100005
#define INF 1000000005
#define LINF 1000000000000000005ll
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll n,k,a[100005];
int32_t main(){
CODE_START;
cin>>n>>k;
for(ll i=1;i<=n;i++)
{
cin>>a[i];
}
vector<ll>v;
ll last=0;
for(ll i=2;i<=n;i++)
{
    v.pb(a[i]-a[i-1]);
}
sort(v.begin(),v.end());
ll ans=0;
for(ll i=0;i<n-k;i++)
{
    ans+=v[i];
}
cout<<ans+k<<endl;
}

Compilation message (stderr)

stove.cpp: In function 'int32_t main()':
stove.cpp:30:4: warning: unused variable 'last' [-Wunused-variable]
   30 | ll last=0;
      |    ^~~~

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