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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     int t,x,y,dzielniki,pierwsze;
  8.     cin >> t;
  9.     for(int a=0; a<t; a++)
  10.     {
  11.         cin >> x >> y;
  12.         if(x<2 || y<x)
  13.             return 0;
  14.         pierwsze=0;
  15.         while(x<=y)
  16.         {
  17.             dzielniki=0;
  18.             for(int z=1;z<=x;z++)
  19.             {
  20.                 if(dzielniki>2)
  21.                     break;
  22.                 if(x%z==0)
  23.                     dzielniki++;
  24.                 if(z==x && dzielniki<3)
  25.                 {
  26.                     pierwsze++;
  27.                     //cout << x << " ";
  28.                 }
  29.             }
  30.             x++;
  31.         }
  32.         cout << pierwsze << endl;
  33.     }
  34.     return 0;
  35. }
  36.  
Success #stdin #stdout 0s 4524KB
comments (?)
stdin
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4
9 43
2 12
7 64
stdout
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10
5
15
https://ideone.com/wgl252
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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