/* -*- coding: utf-8 -*-
 *
 * 99.cc: No.99 ジャンピング駒 - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

/* typedef */

/* global variables */

/* subroutines */

/* main */

int main() {
  int n;
  cin >> n;

  int en = 0, on = 0;
  for (int i = 0; i < n; i++) {
    int x;
    cin >> x;
    if (abs(x) & 1) on++;
    else en++;
  }
  //printf("en=%d, on=%d\n", en, on);

  printf("%d\n", abs(en - on));
  return 0;
}