a,v=list(map(int,input().split()))

b,w=list(map(int,input().split()))

t=int(eval(input()))

k=abs(a-b)

if w-v>0:

    print("NO")

elif w==v:

    if k==0:

        print("YES")

    else:

        print("NO")

else:

    if k<=(v-w)*t:

        print("YES")

    else:

        print("NO")
a,v=list(map(int,input().split()))

b,w=list(map(int,input().split()))

t=int(eval(input()))

k=abs(a-b)

if 0<=k<=(v-w)*t and v!=w:

    print("YES")

else:

    print("NO")
a, v = list(map(int, input().split()))
b, w = list(map(int, input().split()))
t = int(eval(input()))
k = abs(a - b)
if w - v > 0:
    print("NO")
elif w == v:
    if k == 0:
        print("YES")
    else:
        print("NO")
else:
    if k <= (v - w) * t:
        print("YES")
    else:
        print("NO")

a, v = list(map(int, input().split()))
b, w = list(map(int, input().split()))
t = int(eval(input()))
k = abs(a - b)
if 0 <= k <= (v - w) * t and v != w:
    print("YES")
else:
    print("NO")

-if w - v > 0: +if 0 <= k <= (v - w) * t and v != w: +    print("YES") +else: -elif w == v: -    if k == 0: -        print("YES") -    else: -        print("NO") -else: -    if k <= (v - w) * t: -        print("YES") -    else: -        print("NO")