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  1. #include <iostream>
  2. #include <map>
  3. #include <vector>
  4. #include <queue>
  5. #include <stack>
  6. #include <string>
  7. #include <algorithm>
  8. #include <cmath>
  9. #include <cstdio>
  10. using namespace std;
  11.  
  12. int main () 
  13. {
  14. 	    long long  count = 0;
  15. 	    int N = 100000;
  16.     for (int i=2; i<N; i++) 
  17.         for (int j=2; j*j<=i; j++)
  18.         {
  19.         	count++;
  20.             if (i % j == 0) 
  21.                 break;
  22.             else if (j+1 > sqrt(i)) {
  23.                 //cout << i << " ";
  24.             }
  25.         }   
  26.  
  27. 	cout << "\ncnt : " << count;
  28.     return 0;
  29. }
Success #stdin #stdout 0.01s 3468KB
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Standard input is empty
stdout
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cnt : 2745693
https://ideone.com/r5X6Qb
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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