#include <algorithm>
#include <cstdio>
#include <iostream>
#include <map>
#include <cmath>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#include <stdlib.h>
#include <stdio.h>
#include <bitset>
using namespace std;
#define FOR(I,A,B) for(int I = (A); I < (B); ++I)
typedef long long ll;

int main()
{
  int N;
  cin >> N;
  int even = 0, odd = 0;
  FOR(i,0,N) {
    ll x;
    cin >> x;
    x = abs(x);
    if(x%2==0) even++;
    else odd++;
  }
  cout << abs(even-odd) << endl;
  return 0;
}