include

using namespace std;

int main(){

long long int n;                      
long int a,b,c,d;                
long long int count=0;                
cin>>n>>a>>b>>c>>d;         
count=(n/a)+(n/b)+(n/c)+(n/d);

count-=(n/(a*b)+n/(a*c)+n/(a*d)+n/(b*c)+n/(b*d)+n/(c*d));
count+=(n/(a*b*c)+n/(a*b*d)+n/(a*c*d)+n/(b*c*d))*3;
count-=(n/(a*b*c*d))*4*3;
count+=(n/(a*b*c*d))*6;

count-=(n/(a*b*c)+n/(a*b*d)+n/(a*c*d)+n/(b*c*d)-n/(a*b*c*d)*4)*2;

count-=(n/(a*b*c*d))*3;
cout<<count;

return 0;

}