def main():
    a, b, c, d = map(int, input().split())
    p, q, r, s, t = map(int, input().split())
    sum = 0
    sum += p * a
    sum += b * q
    sum += c * r
    sum += d * s
    if sum <= t:
        print('Yes')
    else:
        print('No')

if __name__ =="__main__":
    main()