#include <bits/stdc++.h>
using namespace std;
#define ll long long
const ll bignum=1e17;
const int inf= 2e9;
const int mod= 1e9+7;
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
ll n;
cin>>n;
ll arr[n];
for (int i=0;i<n;i++){
cin>>arr[i];
}
sort(arr,arr+n);
reverse(arr,arr+n);
ll ans=0;
for (int i=0;i<n;i++){
if (!((i+1)%3))continue;
ans+=arr[i];
}
cout<<ans;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
0 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
14 ms |
1644 KB |
Output is correct |
7 |
Correct |
10 ms |
1516 KB |
Output is correct |
8 |
Correct |
10 ms |
1516 KB |
Output is correct |
9 |
Correct |
18 ms |
1644 KB |
Output is correct |
10 |
Correct |
18 ms |
1644 KB |
Output is correct |