#include<stdio.h>
int main()
{
	int a, b, c, d;
	scanf("%d %d %d %d", &a, &b, &c, &d);
	int p, q, r, s, t;
	scanf("%d %d %d %d %d", &p, &q, &r, &s, &t);
	if (a * p + b * q + c * r + d * s > t)
		printf("No\n");
	else
		printf("Yes\n");
	return 0;
}