import java.util.Arrays;
import java.util.List;
import java.util.Scanner;
import java.util.stream.Collectors;

public class L02_GaussTrick {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        List<Integer> number = Arrays.stream(scanner.nextLine().split(" "))
                .map(Integer::parseInt).collect(Collectors.toList());

        int size = number.size() / 2;

        for (int i = 0; i < size; i++) {
            number.set(i, number.get(i) + number.get(number.size() - 1));
            number.remove(number.size() - 1);
        }

        for (Integer integer : number) {
            System.out.print(integer + " ");
        }

    }
}