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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int long long
  4. #define all(X) (X).begin(), (X).end()
  5. int t=1;
  6.  
  7. signed main()
  8. {
  9. 	ios_base::sync_with_stdio(0), cin.tie(0);
  10.     cin>>t;
  11.     vector<int>s;
  12.     for (int i=0;i<=2e5;i++)
  13.     {
  14.         s.push_back(i*i);
  15.     }
  16.     while(t--)
  17.     {
  18.         int n;
  19.         cin>>n;
  20.         vector<int> a(n); 
  21.         vector<int>b(n);
  22.         for (int i=0;i<n;i++)
  23.             a[i]=i;
  24.         b=a;
  25.         int x=n-1;
  26.         while(x>=0)
  27.         {
  28.             int c=a[x];
  29.             int anum= *lower_bound(all(s),a[x]);
  30.             int d=anum-c;
  31.             reverse(b.begin()+d,b.begin()+c+1);
  32.             x=d-1;
  33.         }
  34.         for (auto j:b)
  35.             cout<<j<<" ";
  36.         cout<<"\n";
  37.     }
  38.     return 0;
  39. }
Success #stdin #stdout 0.01s 5548KB
comments (?)
stdin
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3
3
4
7
stdout
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1 0 2 
0 3 2 1 
1 0 2 6 5 4 3
https://ideone.com/k2qD8C
language:
C++14 (gcc 8.3)
created:
1 year ago
visibility:
public

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