# -*- coding: utf-8 -*-
####ID robot

#### Exercise:
#### 
#### You have a robot moving in the plane. The robot obeys the following commands.
#### 
####  e: move one unit to the right, w: move one unit to the left, n: move one unit upwards, s: move one unit downwards
####  .: do not move, d: double the size of the unit of motion, h: halve the size of the unit of motion
####  r: move to the point symmetric with respect to the x-axis, R: move to the point symmetric with respect to the y-axis
####
#### Initially the robot is at location (0, 0) and the unit of motion is 1.
####
#### Write a python function
#### 
####  move(command)
####
#### where command is a string each of whose letters is one of the above commands. The robot reads the string from left to right
#### and executes the commands. Your function must return a list with two numbers (floats) [x, y] with the robot's final position.
####
#### If the string contains letters which are not among the above-listed commands then these letters must be skipped.
####
#### For example, if command is the string "e.enAwwsSs" then [x, y] shall be [0., -1.].
####
#### Write your code only between the the two lines marked START and STOP below. Do not alter any of the other lines.
#### 
#### To run your program, stored in the file user.py, you give the command
#### 
####  python user.py
#### 
#### To check your program with the tester you give the command
#### 
####  python tester.py
#### 
#### or
#### 
####  python tester.py filename.py
#### 
#### if your program has been stored in filename.py.

command = raw_input("Please give the command string to the robot: ")

#### Assumptions:
#### 
#### At this point the string command has been given.
#### 
#### Requirements:
#### 
#### The function move() that you must fill in below must compute what is described above.

#############################################################################
#### You must not give any print or input functions in your code below.
#############################################################################

#### Do not change anything down to the next line.
####START You write your code after this line.

def move(command):
    x, y = 0., 0.
    step = 1.   
    for c in command:
        if c=="e":
            x += step; continue
        if c=="w":
            x -= step; continue
        if c=="n":
            y += step; continue
        if c=="s":
            y -= step; continue
        if c=="d":
            step *= 2.; continue
        if c=="h":
            step *= 0.5; continue
        if c=="r":
            y = -y; continue
        if c=="R":
            x = -x; continue
    return [x, y]


####STOP Do not change anything on this line or below.
print "input = %r\noutput = %r" % (command, move(command))