Problem p02675 - Generation 3

Orig Description

Score: 100 points
Problem
Snuke, a cat, wants to play the popular Japanese game "ÅtCoder". Therefore, Iroha-chan decided to teach Snuke Japanese.
In Japanese, when counting pencils, you attach the counter word "hon" after the number. The reading of this counter word "hon" differs depending on the number. Specifically, when using the expression "N hon" to mean "N pencils", it is read as follows:
When the last digit of N is 2, 4, 5, 7, or 9, it is read as "hon".
When the last digit of N is 0, 1, 6, or 8, it is read as "pon".
When the last digit of N is 3, it is read as "bon".
Given N, write a program to output how to read "N hon" using the counter word "hon".
Constraints
N is an integer between 1 and 999 (inclusive).
Input
The input is given in the following format from standard input:
N
Output
Output how to read "N hon" using the counter word "hon".
Sample Input 116
Sample Output 1pon
Since the last digit of 16 is 6, "16 hon" is read as "pon".
Sample Input 22
Sample Output 2hon
Since the last digit of 2 is 2, "2 hon" is read as "hon".
Sample Input 3183
Sample Output 3bon

Extracted Specification

An integer N (1 ≤ N ≤ 999), representing some quantity or size.

### Example Input:

```
116
```

### Function Signature:
Write a function f(N) that takes in the input. 
```python
def f(N: int): 
    ''' 
    N: an integer 
    '''
```

Test Case Generator

To generate test cases for the given problem statement, we need to create a function that will randomly select an integer \( N \) within the specified range (1 to 999) and derive the corresponding output based on the last digit of \( N \). Here is the test case generator function:

```python
import random

def determine_reading(N):
    last_digit = N % 10
    if last_digit in {2, 4, 5, 7, 9}:
        return f"{N}hon"
    elif last_digit in {0, 1, 6, 8}:
        return f"{N}pon"
    elif last_digit == 3:
        return f"{N}bon"

def tcgen():
    # Generate a random integer N within the range 1 to 999
    N = random.randint(1, 999)
    
    # Determine the correct reading based on the last digit of N
    result = determine_reading(N)
    
    return N, result

# Example usage
for _ in range(5):
    N, result = tcgen()
    print(f"Input: {N}")
    print(f"Output: {result}")
    print()
```

### Explanation:

1. **Function `determine_reading(N)`**:
    - This function takes an integer \( N \) and determines the reading based on the last digit of \( N \).
    - It uses modular arithmetic to extract the last digit of \( N \) and then checks which set the last digit belongs to (hon, pon, or bon).

2. **Function `tcgen()`**:
    - This function generates a random integer \( N \) within the range 1 to 999.
    - It calls `determine_reading(N)` to get the correct reading for \( N \).
    - It returns \( N \) and the corresponding reading as a tuple.

3. **Example usage**:
    - A loop is used to generate and print five sample test cases using the `tcgen()` function.

This generator ensures that all possible values of \( N \) within the constraints are tested, and it produces the correct expected output for each generated test case.

Extract Arguments

def extract_arguments(fh):
    N = int(fh.readline().strip())
    return (N,)