# Template for Palindrome
inputFile = open("palin.txt", "r")
outputFile = open("palout.txt", "w")
 
# Read in the input
N = int(inputFile.readline())
# "readline" also includes the newline marking the end of the line (if there is one).
# We add a .strip() which gets rid of it for us.
line = inputFile.readline().strip()
 
# Convert the string to a list so we can modify it
line = list(line)
 
# The characters of the palindrome are line[0], line[1], ..., line[N-1]
# TODO: Solve the problem
 
# Convert back to a string for printing
line = "".join(line)
 
outputFile.write(line)
 
inputFile.close()
outputFile.close()