The application is a simulation of a toy robot moving on a square tabletop,
of dimensions 5 units x 5 units.
There are no other obstructions on the table surface.
The robot is free to roam around the surface of the table, but must be
prevented from falling to destruction. Any movement that would result in the
robot falling from the table must be prevented, however further valid
movement commands must still be allowed.
Instructions for the Robot
PLACE X,Y,F
MOVE
LEFT
RIGHT
REPORT
PLACE will put the toy robot on the table in position X,Y and facing NORTH,
SOUTH, EAST or WEST.
The origin (0,0) can be considered to be the SOUTH WEST most corner.
The first valid command to the robot is a PLACE command, after that, any
sequence of commands may be issued, in any order, including another PLACE
command. The application should discard all commands in the sequence until
a valid PLACE command has been executed.
MOVE will move the toy robot one unit forward in the direction it is
currently facing.
LEFT and RIGHT will rotate the robot 90 degrees in the specified direction
without changing the position of the robot.
REPORT will announce the X,Y and F of the robot. This can be in any form,
but standard output is sufficient.
Constraints
The toy robot must not fall off the table during movement. This also
includes the initial placement of the toy robot.
Any move that would cause the robot to fall must be ignored.