完全竞争厂商短期均衡

def solve(____):
    fc, a, b = cost_func
    q_opt = (____) / (____ * b)
    tc = fc + a * q_opt + b * q_opt ** ____
    tr = price * q_opt
    profit = tr - tc
    return {"____": price, "____": round(____), "____": round(____), "____": round(____), "____": round(____)}