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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int pt(int n)
  4. {
  5.     int i,j,d,res = 1;
  6.     for (i = 2;i <= trunc(sqrt(n));i++)
  7.     if (n % i == 0)
  8.     {
  9.         d = 0;
  10.         while (n % i == 0)
  11.         {
  12.             n /= i;
  13.             d++;
  14.         }
  15.         res *= (1 + d);
  16.     }
  17.     if (n != 1) res *= 2;
  18.     return res;
  19. }
  20. int main()
  21. {
  22.     int i,n,d = 0;
  23.     cin >> n;
  24.     for (i = 1;i <= trunc(sqrt(n));i++)
  25.     if (n % i == 0)
  26.     {
  27.         if (pt(i) == 4) d++;
  28.         if (i != n / i && pt(n / i) == 4) d++;
  29.     }
  30.     cout << d;
  31.     return 0;
  32. }
  33.  
Success #stdin #stdout 0.01s 5500KB
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https://ideone.com/77O573
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
secret

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