权衡理论

def solve(____):
    optimal_debt = ____
    max_value = ____
    for debt in range(____, int(____) + ____, ____):
        tax_shield = tax_rate * debt
        bankruptcy_cost = bankruptcy_cost_rate * debt ** ____ / debt_capacity
        firm_value = ebit * (____ - tax_rate) / cost_equity + tax_shield - bankruptcy_cost
        if firm_value > max_value:
            max_value = firm_value
            optimal_debt = debt
    return {"____": optimal_debt, "____": round(____)}