#include<iostream>
using namespace std;

int main()
{
    int n;

    cin>>n;

    int a=0,b=0;
    while(n--)
    {
        int x;
        cin>>x;
        if(x&1)a++;
        else b++;
    }

    if(a%2==0)cout<<b;
    else cout<<a<<endl;

}