from concurrent.futures import ThreadPoolExecutor

def multiply(n: int, mult: int):
    return n * mult

def threadpool_map(values: list[int], multiplier: int) -> list[int]:
    # Usa ThreadPoolExecutor para aplicar el multiplicador a cada elemento
    # y retorna la lista de resultados.
    with ThreadPoolExecutor(max_workers=5) as executor:
        results = list(executor.map(lambda x: multiply(x, multiplier), values))
    return results