# ACSL Senior 5 Division

# Lexington High School

# 2012-2013 Contest #2

# Jonathan Tidor

def alph(cell):

import re

letters = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H']

string = ''

for letter in letters:

for i in re.findall(letter,cell):

string = string + letter

return string

while 0==0:

cmd = input('Enter a valid operation name: ')

if cmd == 'DIVIDE':

cell = input('Enter the string: ')

cell1 = alph(cell[0:4])

cell2 = alph(cell[4:8])

print(cell1+cell1+' and '+cell2+cell2+'\n')

if cmd[0:-1] == 'ADD':

cell = input('Enter the string: ')

n = int(cmd[-1])

cell1 = cell[0:n]

cell2 = cell[n:8-n]

print(cell1+alph(cell1)+cell2+'\n')

if cmd[0:-1] == 'SUBTRACT':

cell = input('Enter the string: ')

n = int(cmd[-1])

cell1 = cell[n:]

cell2=''

if n!=0:

cell2 = alph(cell[-n:])

print(cell1+cell2+'\n')

if cmd == 'UNION':

cell1 = input('Enter the first string: ')

cell2 = input('Enter the second string: ')

print(alph(cell1[4:])+alph(cell2[:4])+'\n')

if cmd == 'INTERSECT':

cell1 = input('Enter the first string: ')

cell2 = input('Enter the second string: ')

cell1 = cell1[:2]+cell1[6:]

cell2 = cell2[:2]+cell2[6:]

print(alph(cell1)+alph(cell2)+'\n')