计算诸如-123,456,789 + 123,123的值
import java.math.BigInteger;
import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner cin = new Scanner(System.in);
String str1, str2;
BigInteger a, b;
while(cin.hasNext()){
str1 = cin.next();
str2 = cin.next();
str1 = str1.replaceAll(",", "");
str2 = str2.replaceAll(",", "");
a = new BigInteger(str1);
b = new BigInteger(str2);
System.out.println(a.add(b));
}
}
}