you write exact value for 2^63 & 2^31,and it will work.

Here its works class Solution{ public static void main(String []argh) {

    Scanner sc = new Scanner(System.in);
    int t=sc.nextInt();

    for(int i=0;i<t;i++)
    {

        try
        {
            long x=sc.nextLong();
            System.out.println(x+" can be fitted in:");
            if(x>=-128 && x<=127)System.out.println("* byte");
            //Complete the code
            if(x>=-32768 && x<=32767)
            System.out.println("* short");
        if(x>=Math.pow(-2,31) && x<Math.pow(2,31))
            System.out.println("* int");
        if(x>=Math.pow(-2,63) && x<=Math.pow(2,63))
            System.out.println("* long");


        }
        catch(Exception e)
        {
            System.out.println(sc.next()+" can't be fitted anywhere.");
        }

    }
}

}