using System;
using System.Collections.Generic;
using System.Linq;
class Program{

    const long MOD =1000000007;
   
    static void Main(string[] args){
        int n = ScanOneInt();
        long[] ar = ScanLongArray(n);
        long[] ans = new long[n];
        long total = 0;
        for (int i = 0; i < n; i++)
        {
            total += ar[i];
        }
        for (int i = 0; i < n; i++)
        {
            if (i % 2 == 1)
            {
                total -= 2*ar[i];
            }
        }
        ans[0] = total;
        for (int i = 1; i < n; i++)
        {
            ans[i] = ar[i - 1] * 2 - ans[i-1];
        }

        foreach (var item in ans)
        {
            Console.Write(item+" ");
        }
        
    }

   
    static int Nibutan(long[] array, long k)
        // 以上・未満などをちゃんと見ること！
    {
        int low = 0 ;
        int high = array.Length-1;
        int mid = high;

        while (low < high)
        {
            mid = (low + high) / 2;
            if(array[mid] >= k) // k以上の最小index.ココを変えるだけ
            {
                high = mid;
            }
            else
            {
                low = mid + 1;
            }
            mid = (low + high) / 2;
        }
        return mid;
    }

    static int ScanOneInt()
    {
        return int.Parse(Console.ReadLine());
    }

    static long ScanOneLong()
    {
        return long.Parse(Console.ReadLine());
    }

    static int[] ScanIntArray(int t)
    {
        string[] str = Console.ReadLine().Split(' ');
        int[] ar = new int[t];
        for (int i = 0; i < t; i++)
        {
            ar[i] = int.Parse(str[i]);
        }
        return ar;
    }

    static Tuple<int,int> ScanTuple()
    {
        int[] tmp = ScanIntArray(2);
        return new Tuple<int, int>(tmp[0], tmp[1]);
    }
    static long[] ScanLongArray(int t)
    {
        string[] str = Console.ReadLine().Split(' ');
        long[] ar = new long[t];
        for (int i = 0; i < t; i++)
        {
            ar[i] = long.Parse(str[i]);
        }
        return ar;
    }

    static string[] ScanStringArray()
    {
        return Console.ReadLine().Split(' ');
    }

    static double[] ScanDoubleArray(int t)
    {
        string[] str = Console.ReadLine().Split(' ');
        double[] ar = new double[t];
        for (int i = 0; i < t; i++)
        {
            ar[i] = double.Parse(str[i]);
        }
        return ar;
    }


    static int[,] CombModMake()
    {
        int[,] res = new int[2005, 2005];
        for (int i = 0; i < 2005; i++)
        {
            for (int j = 0; j < 2005; j++)
            {
                if (i == 0 || i < j)
                {
                    res[i, j] = 0;
                }
                else if (j == 0 || i == j)
                {
                    res[i, j] = 1;
                }
                else
                {
                    res[i, j] = (res[i - 1, j] + res[i - 1, j - 1]) % (int)MOD;
                }
            }
        }
        return res;
    }

    static int Gcd (int a, int b)
    {
        if(b == 0)
        {
            return a;
        }
        else
        {
            return Gcd(b, a % b);
        }
    }

    static long Gcd_l(long a, long b)
    {
        if (b == 0)
        {
            return a;
        }
        else
        {
            return Gcd_l(b, a % b);
        }
    }


}

/*
 * pairのソート
        List<Tuple<int, int>> pairList = new List<Tuple<int, int>>();
        for (int i = 0; i < n; i++)
        {
            Tuple<int, int> tmp = ScanTuple();
            pairList.Add(tmp);
        }
        IOrderedEnumerable<Tuple<int, int>> sortedList = pairList.OrderBy(a => a.Item1).ThenBy(a => a.Item2);
*/


Measured memory_bytes: 29140