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#include <iostream>
#include <vector>
#include <string>
#include <map>


using namespace std;

const int pier = 1000000007;

bool mopadulo(long long l)
{
    if (((l%pier)%2)==0)
        return true;
    else
        return false;
}

long long l_podz(vector<long long>::iterator Vp, vector<long long>::iterator Vk)
{
    int rozm = Vk-Vp;
    if (rozm == 1)
    {
        return 1;
    }
    long long ans = 0;
    long long x = (*Vp);
    for (int i = 1; i < rozm; i++)
    {
        if(mopadulo(*(Vp+i)-x) )
        {
            ans += l_podz((Vp+i), Vk);
            ans = ans%pier;
        }
    }
    return ans;
}

int main()
{

    int n, t;
    cin>>n;
    vector <int> a(n);
    vector <long long> indsum (n+1);
    for (int i = 0; i < n; i++)
    {
        cin >>a[i];
        indsum[i+1]=indsum[i]+a[i];
    }
    cout << l_podz(indsum.begin(), indsum.end());

}