// A class to represent a Student object
class Student
{
  public int StudentNumber;
  public String Name;
  private int BankBalance;

// Constructor with params
  public Student (int a, String s, int f)
  {
    StudentNumber = a;
    Name = s;
    BankBalance = f;
  }

// Constructor to initialize data values
  public Student ()
  {
    // An invalid # to indicate no value
    StudentNumber = -1;
    Name = "";
    BankBalance = 0;
  }

// Some functions to manipulate the bank balance
  public void depositMoney (int f)
  {
    BankBalance += f;
    
  }

  public void payRent ()
  {
    
    BankBalance -= 50;
  }

  public void buyPizza ()
  {
    BankBalance -= 10;
  }

  public int getBalance ()
  {
    
    return BankBalance;
  }
}