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using System ; 
class MyVector3{
    public float X {get; set;}
    public float Y {get; set;}
    public float Z {get; set;}
 
    
    public MyVector3(float x, float y, float z){
        X = x ;
        Y = y ;
        Z = z ;
    }    
    public static MyVector3 operator+ (MyVector3 vec1, MyVector3 vec2){
        return new MyVector3( vec1.X +vec2.X , vec1.Y +vec2.Y, vec1.Z +vec2.Z) ;
    } 
 
    public static MyVector3 operator* (MyVector3 vec, float fact){
        return new MyVector3( vec.X * fact , vec.Y*fact, vec.Z*fact) ;
    } 
 
    public override string ToString(){
        return string.Format("({0}, {1}, {2})", this.X, this.Y, this.Z);
    }
}
class Program{
    static void Main(){
        MyVector3 vec1 = new MyVector3(1, 2, 3) ;    
        MyVector3 vec2 = new MyVector3(1, 2, 3) ;    
        MyVector3 vec3 = vec1 + vec2 ;
        MyVector3 vec4 = vec1 * 10 ;
        Console.WriteLine( vec3 +" Addition") ;
        Console.WriteLine( vec4 + "Multiplication") ;
        Console.WriteLine( vec2 ) ;
 
        
    }
}

using System ; 
class MyVector3{
	public float X {get; set;}
	public float Y {get; set;}
	public float Z {get; set;}

	
	public MyVector3(float x, float y, float z){
		X = x ;
		Y = y ;
		Z = z ;
	}	
	public static MyVector3 operator+ (MyVector3 vec1, MyVector3 vec2){
		return new MyVector3( vec1.X +vec2.X , vec1.Y +vec2.Y, vec1.Z +vec2.Z) ;
	} 

	public static MyVector3 operator* (MyVector3 vec, float fact){
		return new MyVector3( vec.X * fact , vec.Y*fact, vec.Z*fact) ;
	} 

	public override string ToString(){
		return string.Format("({0}, {1}, {2})", this.X, this.Y, this.Z);
	}
}
class Program{
	static void Main(){
		MyVector3 vec1 = new MyVector3(1, 2, 3) ;	
		MyVector3 vec2 = new MyVector3(1, 2, 3) ;	
		MyVector3 vec3 = vec1 + vec2 ;
		MyVector3 vec4 = vec1 * 10 ;
		Console.WriteLine( vec3 +" Addition") ;
		Console.WriteLine( vec4 + "Multiplication") ;
		Console.WriteLine( vec2 ) ;

		
	}
}