oj.uz

답안 #270420

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
270420 2020-08-17T15:11:47 Z leductoan Akcija (COCI15_akcija) C++14
80 / 80
 22 ms 1408 KB 
#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

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
80.0 / 80.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 14 ms 1152 KB Output is correct
7 Correct 9 ms 1152 KB Output is correct
8 Correct 10 ms 1152 KB Output is correct
9 Correct 22 ms 1408 KB Output is correct
10 Correct 20 ms 1280 KB Output is correct