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#include <bits/stdc++.h>
using namespace std;

#define int long long

const int P = 1e9+7;

main()
{
ios_base::sync_with_stdio(false);

int n; cin>>n;
// cerr << n << endl;
// if(n > 5000) return 0;
vector<int> v;
v.resize(n+1);
for(int i=1; i<=n; i++)
    cin>>v[i];

vector<int> result;
result.resize(n+1);
result[0] = 1;

for(int i=1; i<=n;i++)
{
    int tmp = 0;
    for(int j=i; j>=1; j--)
    {
        tmp += v[j];
        tmp %= P;
        if(tmp %2 == 0)
        {
            result[i] += result[j-1];
            result[i] %= P;
        }
    }
}
cout << result[n] << endl;
return 0;
}