''' Purpose: find the word of the longest length amongst the input
'''

# get the words
reply = input( "Enter text: " )
words = reply.split()

# need to keep track of the longest word seen so far. It's initialization
# should never prevent the word of longest length being missed

longest_word_seen = ''

# consider the words one by one

for word in words :

    # check the word out - compare its length to longest so far
    # if current word is longer than the longest word so far, need to update
    # first get the lengths of the two words we want to compare
    n_1 = len( longest_word_seen )
    n_2 = len( word )

    if ( n_2 > n_1 ) :
        # we no longer care about the old longest word, so we update it
        longest_word_seen = word
    else :
        pass

    # print( word, longest_word_seen )

# longest word so far must be longest as considered every word as a possibility

# print longest word
# print( longest_word_seen )

# all done


# What if, instead of the longest word, we wanted to find all the words
# that are the longest. (If there are ties, save them both)

for word in words:
    # we have already found the longest word seen
    n_1 = len( longest_word_seen )
    n_2 = len( word )

    # print any words with the same length as the longest word
    # == for comparison!
    # = for assignment of variables!
    if ( n_1 == n_2 ):
        print( word )