Orig Description
Set Difference
Find the difference of two sets $A = \{a_0, a_1, ..., a_{n-1}\}$ and $B = \{b_0, b_1, ..., b_{m-1}\}$, $A - B$.
Input
The input is given in the following format.
$n$
$a_0 \; a_1 \; ... \; a_{n-1}$
$m$
$b_0 \; b_1 \; ... \; b_{m-1}$
Elements in $A$ and $B$ are given in ascending order. There are no duplicate elements in each set.
Output
Print elements in the difference in ascending order. Print an element in a line.
Constraints
$1 \leq n, m \leq 200,000$
$0 \leq a_0 < a_1 < ... < a_{n-1} \leq 10^9$
$0 \leq b_0 < b_1 < ... < b_{m-1} \leq 10^9$
Sample Input 1
5
1 2 3 5 8
2
2 5
Sample Output 1
1
3
8
Extracted Specification
An integer n (1 ≤ n ≤ 200,000), representing some quantity or size.
A list of integers a of size n, where each integer is between 0 and 10^9 and the list is in ascending order with no duplicates.
An integer m (1 ≤ m ≤ 200,000), representing some quantity or size.
A list of integers b of size m, where each integer is between 0 and 10^9 and the list is in ascending order with no duplicates.
### Example Input:
```
5
1 2 3 5 8
2
2 5
```
### Function Signature:
Write a function f(n, a, m, b) that takes in the input.
```python
def f(n: int, a: List[int], m: int, b: List[int]):
'''
n: an integer
a: a list of integers
m: an integer
b: a list of integers
'''
```
Test Case Generator
Sure, I can help you write a test case generator for the "Set Difference" problem. Here is the Python code for generating the test cases:
```python
import random
def generate_sorted_unique_list(size, max_value):
"""Generates a sorted list of unique integers."""
return sorted(random.sample(range(max_value + 1), size))
def tcgen():
# Define the constraints
n = random.randint(1, 200000)
m = random.randint(1, 200000)
# Generate two sorted unique lists
A = generate_sorted_unique_list(n, 10**9)
B = generate_sorted_unique_list(m, 10**9)
return n, A, m, B
# Example of using the test case generator
if __name__ == "__main__":
n, A, m, B = tcgen()
print(n)
print(' '.join(map(str, A)))
print(m)
print(' '.join(map(str, B)))
```
### Explanation
1. **generate_sorted_unique_list(size, max_value)**:
- This function generates a sorted list of unique integers. The `random.sample` function is used to generate a list of unique integers, and then the list is sorted.
2. **tcgen()**:
- Randomly generates the sizes `n` and `m` for the sets `A` and `B` within the given constraints.
- Uses the `generate_sorted_unique_list` function to generate the sorted lists `A` and `B`.
3. **Main Section**:
- This part runs the test case generator and prints the generated test case in the required format.
This generator will help you create valid test cases for the "Set Difference" problem. You can adjust the print statements or store the generated data as needed for your testing framework.
Extract Arguments
def extract_arguments(fh):
n = int(fh.readline().strip())
A = list(map(int, fh.readline().strip().split()))
m = int(fh.readline().strip())
B = list(map(int, fh.readline().strip().split()))
return n, A, m, B