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  1. #include<bits/stdc++.h>
  2. // #pragma GCC optimize("unroll-loops" , "O3")
  3. // #pragma GCC target("avx2")
  4. using namespace std;
  5. #define int long long
  6. void run_case()
  7. {
  8.     int n ;
  9.     cin>>n;
  10.     vector<int> occ(n + 1);
  11.     vector<int> a(n);
  12.     vector<int> f(n + 1);
  13.     for(int i = 0 ; i < n ; i++)
  14.     {
  15.         cin>>a[i];
  16.         occ[a[i]]++;
  17.     }
  18.     int ans = n;
  19.     for(int i = 1 ; i <= n;  i++)
  20.     {
  21.         for(int j = 2 * i ;j <= n ; j+=i)
  22.         {
  23.             f[i]+=occ[j];
  24.             f[j]+=occ[i];
  25.         }
  26.         ans = min(ans , f[i] + (n - f[i] - occ[i]) * 2);
  27.     }
  28.     cout<<ans<<'\n';
  29. }
  30. signed main()
  31. {
  32.     ios::sync_with_stdio(0);
  33.     cin.tie(0);
  34.     cout.tie(0);
  35.     int t = 1;
  36.     cin>>t;
  37.     while (t--)
  38.     {
  39.         run_case();
  40.     }
  41.  
  42. }
Runtime error #stdin #stdout #stderr 0.01s 5280KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
stderr
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terminate called after throwing an instance of 'std::bad_alloc'
  what():  std::bad_alloc
https://ideone.com/WLfhVy
language:
C++14 (gcc 8.3)
created:
118 days ago
visibility:
public

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