Write Python code to solve the task:
Once upon a time in a land far far away, inhabited only by math students, Iva and Vedran were discussing self-explanatory sentences. A part of these sentences is exactly one number and it is equal to the total number of letters in the sentence. Some examples are: “This sentence has thirtyone letters.”, “Blah blah seventeen”.

Little Jurica overheard his friends’ conversation and decided to impress them with the amount of self-explanatory sentences he knows by heart. He rushed back home and wrote a programme which will, given a sentence, tell him the minimum number he can put inside so that the sentence is valid. Unfortunately, his computer broke and now he needs your help. Write a programme to help Jurica!

The form of the sentence is: $\mathit{word}_1 \mathit{word}_2 \mathit{word}_3 \ldots \$ \mathit{word}_{n-1} \mathit{word}_ n$. The character $ represents the place where the number should be put in. For example, the form of the sentence “this sentence has thirtyone letters” would be “this sentence has $ letters”.

The rules that apply to writing numbers are the following:
 - numbers from 1 to 10 are written “one”, “two”, “three”, “four”, “five”, “six”, “seven”, “eight”, “nine”, “ten”, respectively
 - numbers from 11 to 19 are written “eleven”, “twelve”, “thirteen”, “fourteen”, “fifteen”, “sixteen”, “seventeen”, “eighteen”, “nineteen”
 - the remaining double digit numbers are written in a way that we name the tens’ digit and add to it the name of the one digit remaining when we remove the tens’ digit. Specially, if by removing the tens’ digit we remain with zero, we add nothing to it
 - the tens’ digits (respectively from 2 to 9) are named the following: “twenty”, “thirty”, “forty”, “fifty”, “sixty”, “seventy”, “eighty”, “ninety”
 - three digit numbers are written in a way that we name the hundreds’ digit number and add to it the number of the double digit number remaining. Specially, if by removing the hundreds’ digit we remain with zero, we add nothing to it
 - the hundreds’ digits (respectively from 1 to 9) are named the following: “onehundred”, “twohundred”, “threehundred”, “fourhundred”, “fivehundred”, “sixhundred”, “sevenhundred”, “eighthundred”, “ninehundred”
 - the rules that apply for numbers with more than three digits are not relevant because the input data will always be such that the output is less than a thousand

Examples of naming some numbers:
 - 68 = “sixty” + “eight” = “sixtyeight”
 - 319 = “threehundred” + “nineteen” = “threehundrednineteen”
 - 530 = “fivehundred” + “thirty” = “fivehundredthirty”
 - 971 = “ninehundred” + “seventy” + “one” = “ninehundredseventyone”

-----Input-----
The first line of input contains the integer $N$ ($1 \leq N \leq 20$), the number of words in the sentence. Each of the following $N$ lines contains a word not longer than 50 lowercase letters of the English alphabet or the character $ (none of the words will be the name of a number). The character $ will appear exactly once.

-----Output-----
The first and only line of output must contain the required sentence. The numbers are named as mentioned before, even if the sentence sounds gramatically incorrect. The input data will be such that a solution will always exist and is less than 1000.

-----Examples-----
Sample Input 1:
5
this
sentence
has
$
letters
Sample Output 1:
this sentence has thirtyone letters 

Sample Input 2:
7
$
is
the
number
of
letters
here
Sample Output 2:
thirty is the number of letters here
user
Step 1: Input the number of words in the sentence, denoted by 'N'.
Step 2: Create an empty list 'words' to store the words in the sentence.
Step 3: Iterate 'N' times and for each iteration, append the word to 'words'.
Step 4: Find the index of the word that contains the character '$' and store it in the variable 'idx'.
Step 5: Iterate through the list 'words' and for each word, calculate its length and store it in the variable 'length'.
Step 6: Initialize an empty string 'output'.
Step 7: For each word in 'words', check if it is the word containing the character '$'.
Step 8: If it is the word containing '$', append the total length of the sentence to 'output'.
Step 9: If it is not the word containing '$', append the word to 'output'.
Step 10: Print the string 'output' as the required sentence.


```python
# Step 11: Input the number of words in the sentence, denoted by 'N'.
N = int(input())
words = []

# Step 12: Create an empty list 'words' to store the words in the sentence.
for _ in range(N):
    # Step 13: Append each word to 'words'.
    words.append(input())

# Step 14: Find the index of the word that contains the character '$' and store it in 'idx'.
idx = words.index('$')

# Step 15: Iterate through the list 'words' and calculate the length of each word.
sentence_length = sum(len(word) for word in words if word != '$')

# Step 16: Initialize an empty string 'output'.
output = ''

# Step 17: For each word in 'words', check if it is the word containing '$'.
for i, word in enumerate(words):
    # Step 18: If it is the word containing '$', append the total length of the sentence to 'output'.
    if i == idx:
        output += str(sentence_length)
    # Step 19: If it is not the word containing '$', append the word to 'output'.
    else:
        output += word
    # Step 20:  Append a space after each word except for the last word.
    if i != N - 1:
        output += ' '

# Step 21:  Print the string 'output' as the required sentence.
print(output)```
assistant
Your answer is wrong.
The answer is incorrect. The assistant was supposed to translate the length of sentence into the words according to rules, but you added the length directly into the output, causing a wrong answer. You should create a dictionary storing the translations for numbers 1-19 and the tens digit translations for numbers 20-90. Also, you need to account for the hundred place for the numbers above 100 while building the final answer string. You need to get more familiarized with the dictionary data structures and its usage for such problems.

 
user
Step 1: Input the number of words in the sentence, denoted by 'N'.
Step 2: Create an empty list 'words' to store the words in the sentence.
Step 3: Iterate 'N' times and for each iteration, append the word to 'words'.
Step 4: Find the index of the word that contains the character '$' and store it in the variable 'idx'.
Step 5: Create a dictionary 'numbers' to store the translations for numbers 1-19 and the tens digit translations for numbers 20-90.
Step 6: Initialize an empty string 'output'.
Step 7: For each word in 'words', check if it is the word containing the character '$'.
Step 8: If it is the word containing '$', calculate the total length of the sentence, accounting for the number translations, and append it to 'output'.
Step 9: If it is not the word containing '$', append the word to 'output'.
Step 10: Print the string 'output' as the required sentence.


```python
# Step 11:  Input the number of words in the sentence, denoted by 'N'.
N = int(input())
words = []

# Step 12:  Create an empty list 'words' to store the words in the sentence.
for _ in range(N):
    # Step 13:  Append each word to 'words'.
    words.append(input())

# Step 14:  Find the index of the word that contains the character '$' and store it in 'idx'.
idx = words.index('$')

# Step 15:  Create a dictionary 'numbers' to store the translations for numbers 1-19 and the tens digit translations for numbers 20-90.
numbers = {
    '1': 'one',
    '2': 'two',
    '3': 'three',
    '4': 'four',
    '5': 'five',
    '6': 'six',
    '7': 'seven',
    '8': 'eight',
    '9': 'nine',
    '10': 'ten',
    '11': 'eleven',
    '12': 'twelve',
    '13': 'thirteen',
    '14': 'fourteen',
    '15': 'fifteen',
    '16': 'sixteen',
    '17': 'seventeen',
    '18': 'eighteen',
    '19': 'nineteen',
    '20': 'twenty',
    '30': 'thirty',
    '40': 'forty',
    '50': 'fifty',
    '60': 'sixty',
    '70': 'seventy',
    '80': 'eighty',
    '90': 'ninety'
}

# Step 16:  Initialize an empty string 'output'.
output = ''

# Step 17:  For each word in 'words', check if it is the word containing '$'.
for i, word in enumerate(words):
    # Step 18:  If it is the word containing '$', calculate the total length of the sentence,
    # Step 19:  accounting for the number translations, and append it to 'output'.
    if i == idx:
        length = sum(len(numbers.get(c, '')) for c in str(len(output)))
        output += numbers.get(str(length), '')
    # Step 20:  If it is not the word containing '$', append the word to 'output'.
    else:
        output += word
    # Step 21:  Append a space after each word except for the last word.
    if i != N - 1:
        output += ' '

# Step 22:  Print the string 'output' as the required sentence.
print(output)
```
assistant
Your answer is wrong.
The calculation of the total sentence length and the replacing of the '$' symbol with the corresponding length in words are not performed correctly. The total sentence length should be calculated at the beginning and it should include all the words' length plus spaces count. After that, you need to find the smallest number which when substituted for the '$' character would make the total sentence length and this number equivalent. If the constructed number is less than the total sentence length, you should proceed to the next possible number till you find the minimum which makes the sentence self-explanatory. Then proceed to translate this number to words. A dictionary for numbers from 1 to 19, and tens from 20 to 90 is a good start, but you have to deal with the hundreds place. The logic of replacing the '$' symbol with the number in words should be revisited.

 
user
Step 1:  The task is to complete a sentence with the exact number of letters it contains including the number itself.
Step 2:  We need to create a map for converting numbers to their word forms for 1-19, then for tens, and hundreds accordingly.
Step 3:  Since we need to add the number in its word form to the sentence to check its length, and this keeps changing as we increase the number, it's a dynamic problem that seems to be best approached by iteratively guessing and validating the number until we find a match.
Step 4:  We should start counting from 1, then increase step by step, converting the number to its word form, then inserting it back into the sentence to check if the total length matches the number.
Step 5:  This approach requires a helper function for converting numbers to words.
Step 6:  Because the output will always be less than 1000 (as per the problem statement), we can avoid implementing conversion for numbers greater than 999.
Step 7:  We also need to prepare the sentence template (by joining the words and placing a placeholder where the number in words will fit), so we can easily substitute numbers in their word forms and check the sentence length.
Step 8:  After finding the number that makes the sentence self-explanatory, we return the sentence with the number in words inserted.
```python
# Step 9:  Starter code provided in the question is missing. Thus, I'm directly defining the main function based on the problem's requirements.

def number_to_words(number):
    # Step 10:  Define mappings for numbers to words
    
    ones = ["", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"]
    teens = ["ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen", "seventeen", "eighteen", "nineteen"]
    tens = ["", "", "twenty", "thirty", "forty", "fifty", "sixty", "seventy", "eighty", "ninety"]
    hundreds = ["", "onehundred", "twohundred", "threehundred", "fourhundred", "fivehundred", "sixhundred", "sevenhundred", "eighthundred", "ninehundred"]

    # Step 11:  Convert number to words
    
    if 1 <= number < 10:
        return ones[number]
    elif 10 <= number < 20:
        return teens[number-10]
    elif 20 <= number < 100:
        return tens[number//10] + ones[number%10]
    elif 100 <= number < 1000:
        if number % 100 == 0:
            return hundreds[number//100]
        else:
            return hundreds[number//100] + number_to_words(number%100)

def create_sentence(sentence_template, word_count):
    # Step 12:  Replace the placeholder with the word count in words
    
    number_word = number_to_words(word_count)
    sentence = sentence_template.replace("$", number_word)
    return sentence

# Step 13:  Main function to find the correct number to complete the sentence
def find_correct_number(sentence_template):
    # Step 14:  Start with 1 because the output will always be less than 1000
    word_count = 1  
    while True:
        # Step 15:  Create the sentence with the current word count in words
        
        sentence = create_sentence(sentence_template, word_count)
        # Step 16:  Check if the total length including spaces matches the current word count
        
        if len(sentence.replace(" ", "")) == word_count:
            # Step 17:  Return the sentence if it's self-explanatory
            return sentence  
        word_count += 1

# Step 18:  Example input processing
n = int(input().strip())
sentence_words = [input().strip() for _ in range(n)]
sentence_template = " ".join(sentence_words)
# Step 19:  Call the function to find the correct number and print the output
print(find_correct_number(sentence_template))

```
assistant