class TestInt {
  public static void main(String[] args){
    Int i = new Int(10);
    Int i1 = i.add(new Int(1));
    Int i2 = i.sub(new Int(2));
    Int i3 = i.mul(new Int(3));
    Int i4 = i.div(new Int(4));
    i.print(); i1.print(); i2.print();i3.print();i4.print();
  }
}	  

class Int {
  private int value;
  public Int(int x){ // constructor
    value = x;
  }
  public Int add(Int x){
    return new Int(value+x.value);
  }
  public Int sub(Int x){
    return new Int(value - x.value);
  }
  public Int div(Int x){
    return new Int(value/x.value);
  }
  public Int mul(Int x){
    return new Int(value*x.value);
  }
  public Int abs(Int x){
    return new Int(x.value >=0 ? x.value : -x.value);
 }  
  public void print(){
    System.out.println(value);
  }
}