java BigdecimalµÄÓ¦ÓÃ
import java.io.*;
import java.math.*;
import java.util.*;
public class Main
{
public static void main(String[] args)
{
Scanner cin=new Scanner(System.in);
BigDecimal a;
BigDecimal b;
BigDecimal c;
int i,k;
k=cin.nextInt();
for(i=1;i<=k;i++)
{
a=cin.nextBigDecimal();
b=cin.nextBigDecimal();
c=a.add(b);
System.out.println(c);
}
}
}
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