package test;

import java.util.ArrayList;

import java.util.Scanner;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

//使用正则表达式

public class exam19 {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        // result存储经过正则表达式判定后的字符串

        ArrayList<String> result = new ArrayList<String>();

        String reg = "(\".*?\")|([a-zA-Z_0-9:/\\\\]+)";// *?非贪婪匹配，最少重复;/\\\\来匹配\\

        Pattern pattern = Pattern.compile(reg);

        while (scanner.hasNext()) {

            String string = scanner.nextLine();

            // 获取matcher对象

            Matcher matcher = pattern.matcher(string);

            String tokeString = "";

            int pos = 0;

            while (pos < string.length()) {

                //匹配定位：开始到结束

                matcher.region(pos, string.length());

                if (matcher.lookingAt()) {

                    // group(0)表示整个串；

                    // group(1)只符合第一个括号的匹配；

                    // group(2)只符合第二个括号匹配

                    if (matcher.group(1) != null) {

                        result.add(matcher.group(1).replaceAll("\"", ""));

                    } else if (matcher.group(2) != null) {

                        result.add(matcher.group(2));

                    }

                    pos = matcher.end();//总匹配的最后索引

                } else {

                    pos++;

                }

            }

            System.out.println(result.size());

            for (String tok : result) {

                System.out.println(tok);

            }

        }

        scanner.close();

    }

}