Exponentiation HDU 1063 Java

// Http://acm.hdu.edu.cn/showproblem.php? PID = 1, 1063
Import java. Io. *; // 2270586 2010-03-31 00:23:08 accepted 1063 234 Ms 7852 K 559 B Java regret
Import java. util .*;
Import java. Math .*;

Public class main
{
Public static void main (string [] ARGs)
{
Bigdecimal A, sum;
Int I, N;
Cin = new partition (system. In );
While (CIN. hasnext ())
{
A = cin. nextbigdecimal ();
N = cin. nextint ();
Sum = bigdecimal. valueof (1 );
For (I = 0; I <n; I ++)
Sum = sum. Multiply ();
Sum = sum. striptrailingzeros (); // remove unnecessary 0 at the end of striptrailingzeros ()
// Toplainstring () returns a non-exponential string
String STR = sum. toplainstring ();
If (Str. startswith ("0.") // format of processing. 00989
{
STR = Str. substring (1 );
}
System. Out. println (STR );
}
}
}
/*
Sample Input
95.123 12
0.4321 20
5.1234 15
6.7592 9
98.999 10
1.0100 12
 

Sample output
548815620517731830194541.899025343415715973535967221869852721
. 00000005148554641076956121994511276767154838481760200726351203835429763013462401
43992025569.928573701266488041146654993318703707511666295476720493953024
29448126.764121021618164430206909037173276672
90429072743629540498.107596019456651774561044010001
1.126825030131969720661201

/* Reference Code
Import java. Io .*;
Import java. util .*;
Import java. Math. bigdecimal;
Public class main {
Public static void main (string [] ARGs ){
Cin = new partition (system. In );
Bigdecimal;
Int P;
String S;
While (CIN. hasnextbigdecimal ()){
A = cin. nextbigdecimal ();
P = cin. nextint ();
S = A. Pow (P). striptrailingzeros (). toplainstring ();
// Striptrailingzeros () Remove unnecessary 0 at the end
// Toplainstring () returns a non-exponential string
System. Out. println (S. startswith ("0 .")? S. substring (1): S );
}
}
}
*/