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a53

prim002

a53
Jan 1st, 2018
134
0
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  1. #include <iostream>
  2. #define LL long long int
  3. using namespace std;
  4. LL n;
  5. bool EsteDivizor;
  6.  
  7. int main()
  8. {
  9. LL n;
  10. cin>>n;
  11. LL DivMax=0 ;
  12. for(LL i=2;i*i<=n;++i) /// Ciur
  13. if(n%i==0)
  14. {
  15. EsteDivizor=true;
  16. for(LL j=2;j*j<=i;++j)
  17. if(i%j==0)
  18. {
  19. EsteDivizor=false;
  20. break;
  21. }
  22. if(EsteDivizor)
  23. if(i>DivMax)
  24. DivMax=i;
  25. while(n%i==0)
  26. n/=i;
  27. }
  28. if(n>1)
  29. if(n>DivMax)
  30. DivMax=n;
  31. cout<<DivMax;
  32. return 0;
  33. }
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