###############################

##----©-Luka-Prebil-Grintal--##

##----pgluka7@gmail.com------##

##----Gimnazija-Viè--2013----##

###############################

def div():

start = words[-1]

f_half = start[:len(start)//2]

s_half = start[len(start)//2:]

result1 = f_half + f_half

result2 = s_half + s_half

print result1, "and", result2

def add():

start = words[-1]

number = int(words[0][3:])

used = ''

for i in range(number):

b = start[i]

used = used+b

ost = start[len(used):]

ost = ost[:-len(used)]

result = used + used + ost

print result

def sub():

start = words[-1]

number = int(words[0][8:])

used = ''

for i in range(number+1):

b = start[-i]

used = used+b

used = used[-number:]

used = used[::-1]

ost = start[len(used):]

ost = ost[:-len(used)]

result = ost + used + used

print result

def uni():

word1 = words[1]

word2 = words[2]

word1 = word1[4:]

word2 = word2[:4]

result = word1 + word2

print result

def itr():

word1 = words[1]

word2 = words[2]

word11 = word1[:2]

word12 = word1[-2:]

word21 = word2[:2]

word22 = word2[-2:]

word1 = word11 + word12

word2 = word21 + word22

result = word1 + word2

print result

for j in range(5):

string = raw_input()

for beseda in string:

words = string.split(", ")

if words[0] == "DIVIDE":

div()

elif words[0][:3] == "ADD":

add()

elif words[0][:8] == "SUBTRACT":

sub()

elif words[0] == "UNION":

uni()

elif words[0] == "INTERSECT":

itr()