/* imports all std modules {{{*/
import
  std.algorithm,
  std.array,
  std.ascii,
  std.base64,
  std.bigint,
  std.bitmanip,
  std.compiler,
  std.complex,
  std.concurrency,
  std.container,
  std.conv,
  std.csv,
  std.datetime,
  std.demangle,
  std.encoding,
  std.exception,
  std.file,
  std.format,
  std.functional,
  std.getopt,
  std.json,
  std.math,
  std.mathspecial,
  std.meta,
  std.mmfile,
  std.net.curl,
  std.net.isemail,
  std.numeric,
  std.parallelism,
  std.path,
  std.process,
  std.random,
  std.range,
  std.regex,
  std.signals,
  std.socket,
  std.stdint,
  std.stdio,
  std.string,
  std.system,
  std.traits,
  std.typecons,
  std.uni,
  std.uri,
  std.utf,
  std.uuid,
  std.variant,
  std.zip,
  std.zlib;
/*}}}*/

/+---test
3
2 2 4
---+/
/+---test
5
3 8 7 5 5
---+/
/+---test
3
1000000000 1000000000 0
---+/

void main(string[] args) {
  readln;
  const A = readln.split.map!(to!long).array;
  const N = A.length;

  auto M = new long[N];
  foreach (i, v; A) {
    M[0] += v * (2 - (i%2)*4);
  }
  M[0] /= 2;

  foreach (i; 1..N) {
    M[i] = A[i-1]*2 - M[i-1];
  }

  foreach (i, v; M) {
    if (i != 0) " ".write;
    v.write;
  }
  writeln;
}
