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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int drunk(int n)
  5. {
  6.     int arr[102];
  7.     for (int i=1; i<=n; i++)
  8.     {
  9.         if (i==1)
  10.         {
  11.             for (int j=1; j<=n; j++)
  12.                 arr[j] = 0;
  13.         }
  14.         else
  15.         {
  16.             for (int j=1; j<=n/i; j++)
  17.             {
  18.                 if (arr[i*j]==0) arr[i*j] = 1;
  19.                 else arr[i*j] = 0;
  20.             }
  21.         }
  22.     }
  23.     int count = 0;
  24.     for (int i=1; i<=n; i++)
  25.         if (arr[i]==0) count++;
  26.     return count;
  27. }
  28.  
  29. int main ()
  30. {
  31.     int T;
  32.     cin>>T;
  33.     int n;
  34.     for (int i=1; i<=T; i++)
  35.     {
  36.         cin>>n;
  37.         cout<<drunk(n)<<endl;
  38.     }
  39.     return 0;
  40. }
Success #stdin #stdout 0s 4368KB
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https://ideone.com/DSe7DL
v- PTIT123F - Người cai ngục say rượu
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
secret

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