import sys, time, random
from collections import deque, Counter, defaultdict
def debug(*x):print('debug:',*x, file=sys.stderr)
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
mi = lambda: map(int, input().split())
li = lambda: list(mi())
inf = 2 ** 61 - 1
mod = 998244353

a, b, c, d = mi()

p, q,  r, s, t = mi()


x = a * p + b * q + c * r + d * s

if x <= t:
    print('Yes')
else:
    print('No')