import java.io.*;

import java.math.*;

import java.security.*;

import java.text.*;

import java.util.*;

import java.util.concurrent.*;

import java.util.function.*;

import java.util.regex.*;

import java.util.stream.*;

import static java.util.stream.Collectors.joining;

import static java.util.stream.Collectors.toList;

class RectangularTank {

private int length;

private int width;

private int height;

public RectangularTank(int inLength, int inWidth, int inHeight) {

length = inLength;

width = inWidth;

height = inHeight;

}

/*

* Complete the 'getSurafceArea' function below.

*

* The function is expected to return an int.

*/

public double getSurfaceArea() {

}

}