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- #include <iostream>
- using namespace std;
- int a_prim(int x)
- {
- int f1,f2,i,ok;
- for (f1=2;f1*f1<=x;f1++)
- if (x%f1==0)
- {
- ok=1;
- for(i=2;i*i<=f1;i++)
- if (f1%i==0)
- ok=0;
- }
- if (ok==1)
- {
- f2=x/f1;
- for (i=2;i*i<=f2;i++)
- if (f2%i==0)
- ok=0;
- if (ok==1 && f1!=f2)
- return 1;
- }
- return 0;
- }
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