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import java.io.*;
class BigInt 
{
 int a[];
 int len;
 BigInt(String str)
 {
 {
  len=str.length();
  a=new int[len];
  for(int i=0;i<len;i++) 
  {
   this.a[i]=str.charAt(i)-48;
  }
 }
 }
 public BigInt bigplus(BigInt b) 
 {
  BigInt sum;
  int l;
  int m=len-1;
  int n=b.len-1;
  int max;
  if(len>=b.len)
  {
   l=b.len;
   max=len-1;
   sum=this;
  }
  else
  {
   l=len;
   sum=b;
   max=b.len-1;
  }
  for(int i=0;i<l;i++) 
  {
    sum.a[max]=a[m]+b.a[n];
    if(max!=0&&sum.a[max]>=10)
    {
     sum.a[max]=sum.a[max]-10;
     sum.a[max-1]++;
    }
    m--;
    n--;
    max--;
  }
  return sum;
  }
  public void output()
  {
 for(int i=0;i<len;i++)
 {
  System.out.print(a[i]);
 }  
  }
}
class TestBig
{
 public static void main(String[] args) throws IOException
 {
String str1;
String str2;
System.out.println("ÇëÊäÈë´óÊý1:");
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
str1=br.readLine();
System.out.println("ÇëÊäÈë´óÊý2:");
BufferedReader br1=new BufferedReader(new InputStreamReader(System.in));
str2=br1.readLine();
 

 BigInt a1=new BigInt(str1);
 BigInt a2=new BigInt(str2);
 BigInt a3=a1.bigplus(a2);
      a3.output();
 }
}


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import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
public class ExceptionDefaultHandler
{
private final static String _relativeExceptionLogPath = "log";
private final static String _defaultExceptionLogFileName = "exception.log";
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 public class StringUtil
{
public static String convertToStringWithTrim(Object object)
{
if(null == object)
{
return null;
}

String returnStr = (String)object;

return Trim(returnStr);
}
public static String Trim(String str)
{
if(IsEmpty(str))
{
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