Submission #315347

#	Time	Username	Problem	Language	Result	Execution time	Memory
315347		Dymo	Stove (JOI18_stove)	C++14	100 / 100	25 ms	3324 KiB

stove

#include<bits/stdc++.h>

using namespace std;


#define pb	push_back
#define ll long long
#define pll pair<ll,ll>
#define ff first
#define ss second
#define endl "\n"
const ll maxn=5e5+50;
const ll mod =1e9+7;
const ll base=113;
ll a[maxn];
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    if (fopen("GIDDY.inp", "r"))
    {
        freopen("GIDDY.inp", "r", stdin);
        freopen("GIDDY.out", "w", stdout) ;
    }
    ll n, k ;
     cin>>n>>k ;
     for (int i=1;i<=n;i++)
     {
         cin>>a[i];
     }
     ll ans=n;
     sort(a+1,a+n+1);
     vector<ll> ans1;
     for (int i=2;i<=n;i++)
     {
         ans1.pb(a[i]-a[i-1]-1);

     }
     sort(ans1.begin(),ans1.end());
     for (auto to:ans1)
     {
         if (k==n) break;
         ans+=to;
         k++;

     }
     cout <<ans;


}

Compilation message (stderr)

stove.cpp: In function 'int main()':
stove.cpp:24:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   24 |         freopen("GIDDY.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
stove.cpp:25:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   25 |         freopen("GIDDY.out", "w", stdout) ;
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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