public class Calculator
{
    public static void main( String[] args )
    {
	String a = args[0];
	String b = args[2];

	System.out.println( a );
	System.out.println( b );

	System.out.println( "------------------" );

	int x = Integer.parseInt( a );
	int y = Integer.parseInt( b );
	int z;

	switch( args[1].charAt(0) )
	{
	     case '+' -> z = x + y;
	     case '-' -> z = x - y;
	     case '.' -> z = x * y;
	     case '/' -> z = x / y;
	}

	System.out.println( z );
    }
}