Submission #270420

#	Time	Username	Problem	Language	Result	Execution time	Memory
270420		leductoan	Akcija (COCI15_akcija)	C++14	80 / 80	22 ms	1408 KiB

akcija

#include<bits/stdc++.h>
using namespace std;
#define task ""
#define BIT(x, i) (((x) >> (i)) & 1)
#define lb lower_bound
#define ub upper_bound
#define lla(v) (v).begin(),(v).end()
#define zs(v) (v).size()
#define fi first
#define se second
#define pb push_back
typedef long double ld;
typedef long long ll;
typedef pair<int,int> pii;
const int mod=1000000007; /// 998244353
const int base=311;
const int N=1e5+5;

int n,a[N];
void solved()
{
    cin>>n;
    for(int i=1;i<=n;++i) cin>>a[i];
    sort(a+1,a+n+1,greater<int>());
    ll ans=0;
    for(int i=1;i<=n;i+=3) ans+=a[i]+a[i+1];
    cout<<ans;
}
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    if(fopen(task".inp","r"))
    {
        freopen(task".inp","r",stdin);
        freopen(task".out","w",stdout);
    }
    solved();
}

Compilation message (stderr)

akcija.cpp: In function 'int main()':
akcija.cpp:34:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   34 |         freopen(task".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
akcija.cpp:35:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   35 |         freopen(task".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 80 / 80