Financial Management
时间限制：3000 ms | 内存限制：65535 KB
描述Larry graduated this year and finally has a job. He"s making a lot of money, but somehow never seems to hav
对于InputStream的 read(b, off, len) 方法 public int read(byte[] b, int off, int len) throws IOException，Javadoc的说明为：
If len is zero, then no bytes are read and 0 is returned
