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#include <bits/stdc++.h>
 
#define st first
#define nd second
#define pb push_back
#define BOOST ios_base::sync_with_stdio(0); cout.tie(0); cin.tie(0);
#define PI 3.14159265359
 
using namespace std;
 
typedef long long ll;
constexpr ll MOD = 1000000007, sup = 29;
constexpr ll MOD_1 = 1234567891, sup_1 = 1009;
constexpr ll MOD_2 = 1000000009, sup_2 = 107;
constexpr int MXN = 300000+10, CZAPA = (1<<19)/*, INF = 1000000000*/;
constexpr ll INF = 1000000000000000000;

ll tab[MXN], dp[MXN], pref[MXN];

int main(){
	BOOST;
	
	int n;
	cin>> n;
	for(int i=1; i<=n; i++){
		cin>> tab[i];
		pref[i] = (pref[i-1] + tab[i])%MOD;
	}
	dp[0] = 1;
	for(int i=1; i<=n; i++){
		for(int j=0; j<i; j++){
			if(((pref[i]-pref[j]+MOD)%MOD)%2 == 0){
				dp[i] += dp[j];
				dp[i] %= MOD;
			}
		}
	}
	cout<< dp[n]%MOD << '\n';


	

	return 0;
}