请问大佬们这个哪里有问题

int fee(int t, int m)
    {
        if (t<23 && t<5)
        {
            if (m<=3)
            {
                return 13+1;
            }
            else
            {
                return 13 + (m-3)*2.3*(1+0.2) + 1;
            }
        }
        else
        {
            if (m<3)
            {
                return 13+1;
            }
            else
            {
                return 13 + (m-3)*2.3 + 1;
            }
        }
    }