Original question: https://github.com/kuldeepiitg/HackerRank/blob/master/Encircular/Encircular.png

encircular.py

#!/bin/python

import sys
import os

# Complete the function below.

### start of my code ###

def doesCircleExists(commands):
    results = []
    for command in commands:
        robot = Robot()
        for c in command:
            if c == 'L':
                robot.l()
            if c == 'R':
                robot.r()
            if c == 'G':
                robot.g()
        if robot.dir == Dir.N and robot.x**2 + robot.y**2 > 0:
            results.append("NO")
        else:
            results.append("YES")
    return results

class Dir:
    N = 0
    S = 1
    W = 2
    E = 3

class Robot:
    
    def __init__(self):
        self.ldict = {Dir.N : Dir.W,
                     Dir.S : Dir.E,
                     Dir.W : Dir.S,
                     Dir.E : Dir.N}
        self.rdict = {Dir.N : Dir.E,
                     Dir.S : Dir.W,
                     Dir.W : Dir.N,
                     Dir.E : Dir.S}
        self.dir = Dir.N
        self.x = 0
        self.y = 0
    
    def l(self):
        self.dir = self.ldict[self.dir]
    
    def r(self):
        self.dir = self.rdict[self.dir]
    
    def g(self):
        if self.dir == Dir.N:
            self.y += 1
        if self.dir == Dir.S:
            self.y -= 1
        if self.dir == Dir.W:
            self.x -= 1
        if self.dir == Dir.E:
            self.x += 1

### end of my code ###

f = open(os.environ['OUTPUT_PATH'], 'w')
    

_commands_cnt = 0
_commands_cnt = int(raw_input())
_commands_i=0
_commands = []
while _commands_i < _commands_cnt:
    _commands_item = raw_input()
    _commands.append(_commands_item)
    _commands_i+=1
    

res = doesCircleExists(_commands);
for res_cur in res:
    f.write( str(res_cur) + "\n" )

f.close()