#include <iostream>
using namespace std;
int main()
{
    int A[6];
    int counter = 0;
    for (int i = 0; i<6;i++)
    {
        cin>>A[i];
    }
    for(int i = 0; i<6; i++)
    {
        if (A[i]%A[i+1]==0)
        {
            counter++;
        }
    }
    cout<< counter<<endl;
	return 0;
}