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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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