import core.bitop, std.algorithm, std.ascii, std.bigint, std.conv, std.math,
    std.functional, std.numeric, std.range, std.stdio, std.string, std.random,
    std.typecons, std.container, std.format;

// dfmt off
T lread(T = long)(){return readln.chomp.to!T();}
T[] aryread(T = long)(){return readln.split.to!(T[])();}
void scan(TList...)(ref TList Args){auto line = readln.split();
foreach (i, T; TList){T val = line[i].to!(T);Args[i] = val;}}
alias sread = () => readln.chomp();enum MOD = 10 ^^ 9 + 7;
// dfmt on

void main()
{
    long N = lread();
    auto A = aryread();

    // A_1 - A_N == d
    long d = A.sum();
    A[] *= 2;
    foreach (i; 0 .. N - 1)
        d -= A[i] * (i & 1);
    auto ans = new long[](N);
    ans[0] = d;
    // writeln(ans[0]);
    foreach (i; 1 .. N)
        ans[i] = A[i - 1] - ans[i - 1];

    write(ans[0]);
    foreach (a; ans[1 .. $])
        write(" ", a);
    writeln();
}
