// yukicoder: No.751 Frac #2
// 2019.5.3 bal4u

#include <stdio.h>

#define gc() getchar()
int in()   // 整数の入力（負数に対応）
{
	int n = 0, c = gc();
	if (c == '-') {	c = gc();
		do n = 10*n + (c & 0xf), c = gc(); while (c >= '0');
		return -n;
	}
	do n = 10*n + (c & 0xf), c = gc(); while (c >= '0');
	return n;
}

long long gcd(long long a, long long b)
{
	long long r;
	while (b != 0) r = a % b, a = b, b = r;
	return a;
}

int main()
{
	int i, n;
	long long si, bo, g;
	
	si = bo = 1;
	n = in();
	si = in(); for (i = 1; i < n; i++) bo *= in();

	n = in(); for (i = 0; i < n; i++) {
		bo *= in();
		if (++i < n) si *= in();
	}

	g = gcd(si, bo); if (g < 0) g = -g;
	si /= g, bo /= g;
	if (bo < 0) bo = -bo, si = -si;
	printf("%lld %lld\n", si, bo);
	return 0;
}