Untitled

#include <iostream>
using namespace std;
int main() {
	int k, l, m, n, d, k1, l1, m1, n1, i = 0, sum;
	int h[100000];
	sum = 0;
	cin >> k1 >> l1 >> m1 >> n1 >> d;
	for (int i = 0; i < d; i++) {
		h[i]=0;
	}	
	k = k1 - 1; l = l1 - 1; m = m1 - 1; n = n1 - 1;
	while (i < d) {
		if (k <= d - 1) h[k] = 1;
		if (l <= d - 1) h[l] = 1;
		if (m <= d - 1) h[m] = 1;
		if (n <= d - 1) h[n] = 1;
		k += k1;
		l += l1;
		m += m1;
		n += n1;
		i += 1;
	}
	for (int i = 0; i < d; i++){
		sum += h[i];
	}
	cout << sum;

}