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Oct 19th, 2017
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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8. int n,m,i,j,a[101][101],kd=0,k=0,f;
  9. cin>>n>>m;
  10. for(i=1; i<=n; i++)
  11. for(j=1; j<=m; j++)
  12. cin>>a[i][j];
  13. for(i=1; i<=n; i++)
  14. for(j=1; j<=m; j++)
  15. if(i%2==0)
  16. {
  17. kd=1;
  18. if(a[i][j]==0 || a[i][j]==1) kd=0;
  19. for(f=2; f<=sqrt(a[i][j]); f++)
  20. if(a[i][j]%f==0)
  21. kd=0;
  22. if(kd==1)
  23. k++;
  24. }
  25. cout<<k;
  26. return 0;
  27. }
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