http://acm.hdu.edu.cn/showproblem.php?pid=1047&&大数Java

大数问题一看就是用Java神器；

import java.util.*;
import java.math.*;
import java.lang.*;
public class Main {

	/**
	 * @param args kapop
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		 
		
	Scanner cin=new Scanner(System.in);
    int t=cin.nextInt();
       		    while(cin.hasNext()){
       		     
       		     if(t==0)
       		    	 break;
       		     t--;
       		    	//BigDecimal max=BigDecimal.valueOf(-1),min=BigDecimal.valueOf(1999999999);
       		     BigDecimal b,sum=BigDecimal.ZERO;
       		    
       		   
       		    
       		     
       		       for(;;)
       		       {
       		    	   b=cin.nextBigDecimal();
       		    	  
       		    	  
       		    	   
       		    	sum=sum.add(b);
       		    	if(b.compareTo(BigDecimal.ZERO)==0)
    		    		   break;
       		    	   
       		       }
       		     
       		       System.out.println(sum);
       		       if(t!=0)
       		    	   System.out.println();
       		    }
       	   
	}

}