题解 | #参数解析#，凑合写出来

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNext()) { // 注意 while 处理多个 case
            String next = in.nextLine();
            HashMap<Integer, Integer> map = new HashMap<>();
            int length = next.length();
            ArrayList<String> list = new ArrayList<>();
            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < length; i++) {
                char c = next.charAt(i);
                boolean b = false;
                if (c == '"'){
                    b = true;
                    for (int j = i + 1; j < length; j++) {
                        if (next.charAt(j) == '"'){
                            list.add(next.substring(i+1,j));
                            // 从""的下一个开始遍历，i++后就是第一个字母
                            i = j + 1;
                            break;
                        }
                    }
                    continue;
                }

                if (c == ' '){
                    list.add(builder.toString());
                    builder = new StringBuilder();
                    continue;
                }
                builder.append(c);
            }
            if (builder.length() != 0){
                list.add(builder.toString());
            }
            System.out.println(list.size());
            for (String s : list) {
                System.out.println(s);
            }
        }
    }
}