Problem p02436 - Generation 3

Orig Description

Queue
Queue is a container of elements that are inserted and deleted according to FIFO (First In First Out).
  For $n$ queues $Q_i$ ($i = 0, 1, ..., n-1$), perform a sequence of the following operations.
enqueue($t$, $x$): Insert an integer $x$ to $Q_t$.
front($t$): Report the value which should be deleted next from $Q_t$. If $Q_t$ is empty, do nothing.
dequeue($t$): Delete an element from $Q_t$. If $Q_t$ is empty, do nothing.
In the initial state, all queues are empty.
Input
  The input is given in the following format.
$n \; q$
$query_1$
$query_2$
:
$query_q$
Each query $query_i$ is given by
0 $t$ $x$
or
1 $t$
or
2 $t$
  where the first digits 0, 1 and 2 represent enqueue, front and dequeue operations respectively.
Output
  For each front operation, print an integer in a line.
Constraints
$1 \leq n \leq 1,000$
$1 \leq q \leq 200,000$
$-1,000,000,000 \leq x \leq 1,000,000,000$
Sample Input 1
3 9
0 0 1
0 0 2
0 0 3
0 2 4
0 2 5
1 0
1 2
2 0
1 0
Sample Output 1
1
4
2

Extracted Specification

An integer n (1 ≤ n ≤ 1,000), representing some quantity.
An integer q (1 ≤ q ≤ 200,000), representing some quantity.
A list of q queries, each query is one of the following:
- Two integers 0 t x, where 0 ≤ t < n and -1,000,000,000 ≤ x ≤ 1,000,000,000.
- One integer 1 t, where 0 ≤ t < n.
- One integer 2 t, where 0 ≤ t < n.

### Example Input:

```
3 9
0 0 1
0 0 2
0 0 3
0 2 4
0 2 5
1 0
1 2
2 0
1 0
```

### Function Signature:
Write a function f(n, q, queries) that takes in the input.
```python
def f(n: int, q: int, queries: List[Tuple[int, int, int]]):
    '''
    n: an integer
    q: an integer
    queries: a list of tuples, each tuple contains either two or three integers
    '''
```

Test Case Generator

Certainly! Below is a test case generator for the given problem statement about performing operations on multiple queues. This generator will randomly create test cases adhering to the given constraints.

```python
import random

def tcgen():
    # Number of queues
    n = random.randint(1, 1000)
    
    # Number of queries
    q = random.randint(1, 200000)
    
    queries = []
    for _ in range(q):
        operation = random.randint(0, 2)
        t = random.randint(0, n - 1)
        
        if operation == 0:
            # enqueue operation
            x = random.randint(-1000000000, 1000000000)
            queries.append(f"0 {t} {x}")
        elif operation == 1:
            # front operation
            queries.append(f"1 {t}")
        else:
            # dequeue operation
            queries.append(f"2 {t}")
    
    # Print the generated test case
    print(f"{n} {q}")
    for query in queries:
        print(query)

# Example usage
tcgen()
```

### Explanation:

1. **Number of Queues**: The number of queues \( n \) is randomly chosen between 1 and 1000.
2. **Number of Queries**: The number of queries \( q \) is randomly chosen between 1 and 200,000.
3. **Operation Generation**:
    - For each query, a random operation type (0, 1, or 2) is chosen.
    - If the operation is `enqueue` (0), a random integer \( x \) between -1,000,000,000 and 1,000,000,000 is generated, and the query is formatted as `0 t x`.
    - If the operation is `front` (1) or `dequeue` (2), the query is formatted as `1 t` or `2 t` respectively.
4. **Output**: The number of queues and queries are printed first, followed by the list of generated queries.

This generator produces random test cases within the specified constraints, which can be used to thoroughly test the implementation of the solution to the given problem.

Extract Arguments

def extract_arguments(fh):
    n, q = map(int, fh.readline().strip().split())
    queries = []
    for _ in range(q):
        query = list(map(int, fh.readline().strip().split()))
        queries.append(query)
    return n, q, queries