public class Rechner {
	
	public static void main(String[] args) {
		int a=Integer.valueOf(args[0]).intValue();
		System.out.print(a+" ");
		
		String operator=args[1];
		System.out.print(operator+" ");
		
		int b=Integer.valueOf(args[2]).intValue();
		System.out.print(b+" ");
		
		System.out.print("ergibt ");
		
		/*
		if (operator.equals("+"))
			System.out.println(a+b);
		else
			System.out.println("Unsinn");
		*/
		
		if (operator.equals("+"))
			System.out.println(a+b);
		else if (operator.equals("-"))
			System.out.println(a-b);
		else if (operator.equals("*"))
			System.out.println(a*b);
		else if (operator.equals("<<"))
			System.out.println(a<<b);
		else if (operator.equals(">>"))
			System.out.println(a>>b);
		else if (operator.equals("=="))
			System.out.println(a==b);
		else if ((operator.equals("/")) && (b==0))
			System.out.println(
		"nichts, denn das ist eine Division durch 0 und daher nicht erlaubt");
		else if (operator.equals("/"))
			System.out.println((double)a/b);
		else System.out.println("Unsinn");
	}
}