POJ 1001

标准的大数问题，第一次用Java的BigDecimal，感觉就是爽……

/*
8700416 MDK 1001 Accepted 3196K 172MS Java 601B 2011-05-28 20:34:03 
*/
import java.io.BufferedInputStream;
import java.math.BigDecimal;
import java.util.Scanner;
class Test {
 
    public static void main(String[] args)
    {
        Scanner cin=new Scanner(new BufferedInputStream(System.in));
        while(cin.hasNext())
        {
            String a=cin.next();
            int n=cin.nextInt();
            BigDecimal bigIntt=new BigDecimal(a.trim());
            bigIntt=bigIntt.pow(n);
            //System.out.println(bigIntt);
            bigIntt = bigIntt.stripTrailingZeros();
            String result = bigIntt.toPlainString();
            if(result.startsWith("0."))
                result=result.substring(1);
            
            System.out.println(result);
        }
    }
}

但是怎么都有种罪过感……

经测试：

Scanner cin=new Scanner(new BufferedInputStream(System.in));

buffer类比直接的system.in快12.4%。