15552번

import java.io.*;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int N = Integer.parseInt(br.readLine());
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));


        for (int i = 0; i < N; i++) {
            String[] number = br.readLine().split(" ");
            int a = Integer.parseInt(number[0]);
            int b = Integer.parseInt(number[1]);

            bw.write(a + b + "\n");
        }
        bw.close();
        br.close();

    }
}