import java.math.BigDecimal;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        BigDecimal sum, num, num1;

        int n;

        Scanner sc = new Scanner(System.in);

        n = sc.nextInt();

        for (int i = 1; i <= n; i++) {

            sum = new BigDecimal("0");

            String s, s1, ans;

            s = sc.next();

            s1 = sc.next();

            num = new BigDecimal(s);

            num1 = new BigDecimal(s1);

            sum = sum.add(num);

            sum = sum.add(num1);

            sum = sum.stripTrailingZeros();

            ans = sum.toPlainString();

            int len = ans.length();

            boolean tag = false;

            for (int j = 0; j < len; j++) {

                if (ans.charAt(j) == '.') {

                    tag = true;

                    break;
                }
            }

            if (tag) {

                System.out.println(sum.stripTrailingZeros());

            } else {

                System.out.print(ans);

                System.out.println(".0");

            }
        }
    }
}