题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=6225
解析：求四个数的和，大整数加法 代码：
import java.io.*;
import java.math.BigInteger;
import java.util.*;
public class Main {
public static Scanner s =
new Scanner(System.in);
public static void main(String args[])
throws Exception {
int t;
t = s.nextInt();
while(t-- !=
0)
{
BigInteger x;
BigInteger sum =
new BigInteger(
"0");
for (
int i =
1; i <=
4; i++)
{
x = s.nextBigInteger();
sum = sum.add(x);
}
System.out.println(sum);
}
}
}
