Jack: Everyone stay calm! We're taking over the ship.
Will: Aye! Avast!
Officer: This ship cannot be crewed by two men. You'll never make it out of the bay.
Jack: Son... I'm Captain Jack Sparrow. Savvy?
And again Captain Jack Sparrow got into a scrape.
In attempt to steal the first of three seals, which are neccessary to get the key
to the treasure of the de Ficit family, he was seen by a watchful guard.
Having run from a castle, where the first seal was, Jack immediately jumped into the nearest
horse-drawn vehicle. Now he is rushing along the main road to an exit from fortress.
At the end of the road there is a gate, a grille of which can start moving down at any moment.
Now the vehicle is moving with constant speed v but at any moment Jack can release the horse.
In this case the vehicle will start slowing down with constant deceleration a.
Jack hopes to rush through the gate and don't want to release the horse until he sees that
the gate starts closing.
If guards of the gate hear an alert and, therefore, the grille starts moving down, Jack will
have to decide whether he needs to release the horse.
But there can be such situation that regardless of Jack's decision the vehicle will
collide with the grille. In this case the vehicle will not rush through the grille nor stop before
the line of the gate. The vehicle is quite slimsy so that it will fall to pieces after collision or even
touching the grille. But, of course, it runs counter to Jack's plans.
Help Jack determine whether guards of the gate can start closing the grille at such a moment that
the vehicle will fall to pieces anyway.
The height of the vehicle equals h, its length is l.
The distance from the ground to the lower bound of the grille initially equals H.
The grille at any moment can start moving down with constant speed x.
At the beginning Jack is far enough from the gate, and the vehicle will stop
before the gate without colliding if Jack releases the horse right away.
In the first line of the input there are space separated integers l, h and H (h < H).
In the second line you are given v, x and a in the same format.
All numbers in the input are positive integers and don't exceed 1 000.
l, h and H are given in centimetres, v and x are in centimetres per second,
a is in centimetres per second squared.
Output “Crash” if there is a moment of start of closing the grille that
the vehicle will fall to pieces anyway. Otherwise output “Safe”.
1 1 1000
1 1 1000
1000 1 2
1000 1 1
Problem Author: Denis Dublennykh (prepared by Egor Shchelkonogov)
Problem Source: Open Ural FU Championship 2012