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#include <bits/stdc++.h>

using namespace std;

constexpr int MAXN=3e5+7, MOD=1e9+7;
int mozliwosci[MAXN], pref[MAXN];

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n, a;

    cin >> n;

    pref[0] = 0;

    for (int i=1; i <= n; i++) {
        cin >> a;

        pref[i] = pref[i-1] + a;

        pref[i] %= MOD;
    }

    for (int i=1; i <= n; i++) {
        if ((pref[i] & 1) == 0) {
            mozliwosci[i]++;
            mozliwosci[i] %= MOD;
        }

        for (int j=1; j < i; j++) {
            if ((((pref[i] - pref[j] + MOD) % MOD) & 1) == 0) {
                mozliwosci[i] += mozliwosci[j];
                mozliwosci[i] %= MOD;
            }
        }
    }

    cout << mozliwosci[n];

    return 0;
}