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

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

t=int(eval(input()))

if a<b and v<=w:

    print("NO")

else:

    if abs(b-a)<=t*(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()))

if a<b and v<=w:

    print("NO")

elif w>v:

    print("NO")

else:

    if abs(b-a)<=t*abs(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()))
if a < b and v <= w:
    print("NO")
else:
    if abs(b - a) <= t * (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()))
if a < b and v <= w:
    print("NO")
elif w > v:
    print("NO")
else:
    if abs(b - a) <= t * abs(v - w):
        print("YES")
    else:
        print("NO")

+elif w > v: +    print("NO") -    if abs(b - a) <= t * (v - w): +    if abs(b - a) <= t * abs(v - w):