安迪的第一个字典 Andy's First Dictionary, UVa 10815

Posted 2020-10-07 淇洹

（Time limit: 3 seconds）

Andy, 8, has a dream - he wants to produce hisvery own dictionary. This is not an easy task forhim, as the number of words that he knows is,well, not quite enough. Instead of thinking up allthe words himself, he has a briliant idea. Fromhis bookshelf he would pick one of his favouritestory books, from which he would copy out allthe distinct words. By arranging the words inalphabetical order, he is done! Of course, it isa really time-consuming job, and this is where acomputer program is helpful.You are asked to write a program that listsall the different words in the input text. In thisproblem, a word is defined as a consecutive sequenceof alphabets, in upper and/or lower case.Words with only one letter are also to be considered. Furthermore, your program must be CaSe InSeNsItIvE.For example, words like “Apple”, “apple” or “APPLE” must be considered the same.

Input

The input file is a text with no more than 5000 lines. An input line has at most 200 characters. Inputis terminated by EOF.

输入文件是不超过5000行的文本。输入行最多包含200个字符。EOF终止输入。

Output

Your output should give a list of different words that appears in the input text, one in a line. Thewords should all be in lower case, sorted in alphabetical order. You can be sure that he number ofdistinct words in the text does not exceed 5000.

您的输出应该给出输入文本中出现的不同单词的列表，一行在一行中。这些字都应该是小写的，按字母顺序排列。您可以确定他在文字中的不同单词的数量不超过5000。

Sample Input

Adventures in Disneyland

Two blondes were going to Disneyland when they came to a fork in the

road. The sign read: "Disneyland Left."

So they went home.

Sample Output

a

adventuresblondes

came

disneyland

fork

going

home

in

left

read

road

sign

so

the

they

to

two

went

were

when