class Infinity
{
    public static void main(String[] args)
    {
        System.out.println(Double.POSITIVE_INFINITY + 1);
        System.out.println(Double.POSITIVE_INFINITY * 1);
        System.out.println(Math.sqrt(Double.POSITIVE_INFINITY));
        System.out.println(Double.NEGATIVE_INFINITY + 1);
        System.out.println(Double.NEGATIVE_INFINITY * 1);
        System.out.println(Math.sqrt(Double.NEGATIVE_INFINITY));        
    }
}

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