import std.algorithm, std.array, std.range;
import std.string, std.conv;
import std.math;
import std.stdio, std.typecons;

void main()
{
  auto n = readln.chomp.to!int;
  auto xi = readln.split.map!(to!int);

  auto ai = new int[2];

  foreach (x; xi) {
    ai[x.abs % 2] += 1;
  }

  writeln((ai[0] - ai[1]).abs);
}