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#include<cstdio>
#include<iostream>
#include<algorithm>
#include<string>
#include<vector>
#include<unordered_map>

using namespace std;

typedef vector<int> VI;
typedef long long LL;

#define FOR(x, b, e) for(int x=b; x<=(e); ++x)
#define FORD(x, b, e) for(int x=b; x>=(e); --x)
#define REP(x, n) for(int x=0; x<(n); ++x)
#define VAR(v, n) __typeof(n) v = (n)
#define ALL(c) (c).begin(), (c).end()
#define SIZE(x) ((int)(x).size())
#define FOREACH(i, c) for(VAR(i, (c).begin()); i != (c).end(); ++i)
#define PB push_back
#define ST first
#define ND second

int p = 1e9 + 7;

int main() {
	ios_base::sync_with_stdio(0);
    int n;
    cin >> n;
    VI a(n);
    REP(i, n) cin >> a[i];
    VI dp(n + 1);
    dp[0] = 1;
    REP(i, n) {
        int j = i;
        int sum = 0;
        while(j >= 0) {
            sum = (sum + a[j]) % p;
            if(sum % 2 == 0) dp[i + 1] = (dp[i + 1] + dp[j]) % p;
            j--;
        }
    }
    cout << dp[n] << '\n';

    return 0;
}