“鱼额宝”类可以记录账户余额、存钱、取钱、计算利息。该类中有一个私有静态成员变量profitRate存储“鱼额宝”的利率，可以用共有静态成员函数setProfitRate修改利率的值。程序输入为第1天至第n天连续n天的账户操作，每天只能进行一次账户操作，或存或取，每一天产生的利息是前一天的账户余额与“鱼额宝”利率的乘积，产生的利息当天也将存入账户余额，由于第1天之前账户不存在，所以第1天一定是新建账户并存钱，且当天不会有利息存入余额。程序在接受n天操作的输入后，要求计算出第n天操作完成后的账户余额并输出。-" Fish Amount treasure"　category account balance can record, save, money, interest calculation. This class has a private static member variables profitRate storage " fish scale treasure"　of interest rates, you can use a total value of a static member function setProfitRate modify interest rates. Program input is 1 day to day n n consecutive days operating account, the operating account only once a day, or deposit or take interest generated each day is the day before the account balance and the " fish scale treasure"　the product of interest , the interest generated on that day will be credited to the account balance, because the account does not exist prior to the first day, the first day must be a new account and deposit money, and the same day there will be no interest on deposit balances. After the program accepts input n-day operations, the requirements in the account balance after completion of the n-th day of operation and output.