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- #include <iostream>
- using namespace std;
- int palindrom(long int x)
- {
- long int z=0,y; y=x;
- while(x!=0)
- {
- z=z*10+x%10;
- x=x/10;
- }
- if(z==y)
- return 1;
- else
- return 0;
- }
- int prim(int n)
- {
- if(n==0 || n==1)
- return 0;
- else
- if(n%2==0&&n!=2)
- return 0;
- else
- for(int d=3;d*d<=n;d=d+2)
- if(n%d==0)
- return 0;
- return 1;
- }
- int norocos(int x)
- {
- if(x%2)
- return 1;
- else
- return 0;
- }
- int main()
- {
- int n,x,nr=0;
- cin>>n;
- for(int i=1;i<=n;i++)
- {
- cin>>x;
- if(palindrom(x)&&prim(x)&&norocos(x))
- nr++;
- }
- cout<<nr;
- return 0;
- }
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