UVa - 748 Exponentiation

//java solution
import java.util.*;
import java.util.regex.*;
import java.io.*;
import java.awt.*;
import java.awt.geom.*;
import java.math.*;
import java.text.*;

class Main
{


    public static void main (String args[])  // entry point from OS
    {
        Main myWork = new Main();  // create a dinamic instance
        myWork.Begin();            // the true entry point
    }

    void Begin()
    {
Scanner sc=new Scanner(new BufferedReader(new InputStreamReader(System.in)));
PrintWriter pr=new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
BigDecimal r=new BigDecimal("0");
int n,i,ix;
String t;
   //default delimiter : "\\s+"
    // that means spaces , tabs , newlines(form feeds , carriage returns)
    // are skipped
            while(sc.hasNext())
{
r=sc.nextBigDecimal();
n=sc.nextInt();
r=r.pow(n);
r=r.stripTrailingZeros();
t=r.toPlainString();
for(i=0;;i++)
{
if(t.charAt(i)!='0')
{
ix=i;break;
}
}
t=t.substring(ix);
pr.println(t);
}
pr.close();
sc.close();
    }
}