Problem:
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Dice I

Write a program to simulate rolling a dice, which can be constructed by the following net.

As shown in the figures, each face is identified by a different label from 1 to 6.

Write a program which reads integers assigned to each face identified by the label and a sequence of commands to roll the dice, and prints the integer on the top face. At the initial state, the dice is located as shown in the above figures.

Input

In the first line, six integers assigned to faces are given in ascending order of their corresponding labels.

In the second line, a string which represents a sequence of commands, is given. The command is one of 'E', 'N', 'S' and 'W' representing four directions shown in the above figures.

Output

Print the integer which appears on the top face after the simulation.

Constraints

$0 \leq $ the integer assigned to a face $ \leq 100$

$0 \leq $ the length of the command $\leq 100$

Sample Input 1

1 2 4 8 16 32
SE

Sample Output 1

8

You are given a dice where 1, 2, 4, 8, 16 are 32 are assigned to a face labeled by 1, 2, ..., 6 respectively. After you roll the dice to the direction S and then to the direction E, you can see 8 on the top face.

Sample Input 2

1 2 4 8 16 32
EESWN

Sample Output 2

32

Solution in Python3 (judge verdict: Accepted)

# coding: utf-8
# Here your code !
import sys
import collections
import math
import unittest

def top_face_after_rolling_dice():
    try:
        faces    = [int(num) for num in input().rstrip().split()]
        rollings = input().rstrip()
    except:
        return __input_error()

    dice = CubicArbitraryValueDice(faces[0], faces[1], faces[2], faces[3], faces[4], faces[5])
    dice.put(dice.TOP, dice.SOUTH, dice.EAST, dice.WEST, dice.NORTH, dice.BOTTOM)
    
    for direction in rollings:
        dice.roll(direction)

    print(dice.faces[dice.direction[dice.TOP]])

class CubicArbitraryValueDice():
    TOP    = "top"
    BOTTOM = "bottom"
    EAST   = "E"
    WEST   = "W"
    SOUTH  = "S"
    NORTH  = "N"
    OPOSITE_DIRECTION_PAIRS = ( (EAST, WEST), (SOUTH, NORTH) )
    
    #??¢???index??§???????????????????????????
    def __init__(self, n_f0, n_f1, n_f2, n_f3, n_f4, n_f5):
        self.faces = [n_f0, n_f1, n_f2, n_f3, n_f4, n_f5]

    #???????????¢???index?????¢??£??????
    def put(self, dir_f0, dir_f1, dir_f2, dir_f3, dir_f4, dir_f5):  #?????°????????£?????????
        self.direction = { dir_fi : i for i,dir_fi in enumerate([dir_f0, dir_f1, dir_f2, dir_f3, dir_f4, dir_f5]) }

    #??¢???index????????´
    def roll(self, direction) : #dirction: (EAST, WEST, SOUTH, NORTH) ??????????????????
        for pair in self.OPOSITE_DIRECTION_PAIRS :
            if direction in pair :
                oposite = pair[0] if (pair[1] == direction) else pair[1]
        
        current = {}
        for direct in (self.TOP, self.BOTTOM, direction, oposite):
            current.update({direct : self.direction[direct]})

        #            direction to bottom,       bottom to oposite,      oposite to top,     top to direction 
        for pair in ((direction, self.BOTTOM), (self.BOTTOM, oposite), (oposite, self.TOP), (self.TOP, direction)):
            self.direction[pair[1]] = current[pair[0]]

def __input_error():
    print("input error")
    return -1

class __TestValueClass(unittest.TestCase):
    #def testEqual(self, func, tuples, eff_digit = math.nan, print_success = False):
    def testEqual(self, func, tuples, eff_digit = None, print_success = False):
        self.testFunction(self.assertEqual,func,tuples,eff_digit,print_success)
    
    def testFunction(self,assertfunc,func,tuples,eff_digit,print_success):
        #tuples[index] = ([*arguments of func], compared value)
        pass
'''
        for item in tuples:
            try:
                if isinstance(item[0], collections.Iterable):
#                    value = func(*item[0])
                else:
                    value = func(item[0])
                
                if math.isnan(eff_digit) :
#                    assertfunc(value,item[1])
                else :
#                    format_str = "{0:."+str(eff_digit)+"g}"
#                    assertfunc(format_str.format(value),format_str.format(item[1]))
                    
            except Exception as msg:
                swidth = 15
                print("="*50)
                print("-- Assertion Error in '" + func.__name__ + "' --")
                info = []
                info.append(["arguments"     , item[0]    ])
                info.append(["compared value", item[1]    ])
                info.append(["message"       , "\n" + msg ])
                for state in info :
                    print(state[0].ljust(swidth) + ":", state[1])
                sys.exit()

        if print_success :
            print(func.__name__,": succeeded")
'''
#test
if __name__ == "__main__" :
#    test = __TestValueClass()
    top_face_after_rolling_dice()