{"trustable":false,"sections":[{"title":"Description","value":{"format":"HTML","content":"\u003cp\u003eAndy, 8, has a dream - he wants to produce his\nvery own dictionary. This is not an easy task for\nhim, as the number of words that he knows is,\nwell, not quite enough. Instead of thinking up all\nthe words himself, he has a briliant idea. From\nhis bookshelf he would pick one of his favourite\nstory books, from which he would copy out all\nthe distinct words. By arranging the words in\nalphabetical order, he is done! Of course, it is\na really time-consuming job, and this is where a\ncomputer program is helpful.\u003c/p\u003e\n\n\u003cp\u003eYou are asked to write a program that lists\nall the different words in the input text. In this\nproblem, a word is defined as a consecutive sequence\nof alphabets, in upper and/or lower case.\nWords with only one letter are also to be considered. Furthermore, your program must be CaSe InSeNsItIvE.\nFor example, words like “Apple”, “apple” or “APPLE” must be considered the same.\u003c/p\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cp\u003eThe input file is a text with no more than 5000 lines. An input line has at most 200 characters. Input is terminated by EOF.\u003c/p\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cp\u003eYour output should give a list of different words that appears in the input text, one in a line. The words should all be in lower case, sorted in alphabetical order. You can be sure that he number of distinct words in the text does not exceed 5000.(Crtl+z作为end of file/EOF结束多组输入)\u003c/p\u003e"}},{"title":"Sample Input","value":{"format":"HTML","content":"\u003cp\u003eAdventures in Disneyland\u003c/p\u003e\n\u003cp\u003eTwo blondes were going to Disneyland when they came to a fork in the road. The sign read: \"Disneyland Left.\"\u003c/p\u003e\n\u003cp\u003eSo they went home.\u003c/p\u003e\n"}},{"title":"Sample Output","value":{"format":"HTML","content":"a\n\u003cbr\u003eadventures\n\u003cbr\u003eblondes\n\u003cbr\u003ecame\n\u003cbr\u003edisneyland\n\u003cbr\u003efork\n\u003cbr\u003egoing\n\u003cbr\u003ehome\n\u003cbr\u003ein\n\u003cbr\u003eleft\n\u003cbr\u003eread\n\u003cbr\u003eroad\n\u003cbr\u003esign\n\u003cbr\u003eso\n\u003cbr\u003ethe\n\u003cbr\u003ethey\n\u003cbr\u003eto\n\u003cbr\u003etwo\n\u003cbr\u003ewent\n\u003cbr\u003ewere\n\u003cbr\u003ewhen"}}]}