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#define pb push_back
#define mp make_pair
#define fi first
#define se second 
#define all(...) begin(__VA_ARGS__) , end(__VA_ARGS__)
#define boost {ios_base::sync_with_stdio(false); cin.tie(); cout.tie();}

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

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef vector <int> vi;
typedef pair<int,int> PII;
typedef pair<ll,ll> PLL;
constexpr ll nax = 3e5+6969, INF = 2e9+6969, mod = 1e9 + 7;

int n;
ll t[nax], pref[nax], dp[nax], odd, even;


int main()
{
	scanf("%d", &n);
	for(int i=1;i<=n;i++) 
	{
		scanf("%lld", &t[i]);
		pref[i] = pref[i-1] + t[i];
		if(pref[i] >= mod) pref[i] -= mod;
	}
	for(int i=1;i<=n;i++) pref[i] %= 2;
	even = 1;
	dp[0] = 1;
	for(int i=1;i<=n;i++) 
	{
		if(pref[i]%2 == 1)
		{
			dp[i] = odd;
			odd += dp[i];
			odd %= mod;
		}
		else
		{
			dp[i] = even;
			even += dp[i];
			even %= mod;
		}
	}
	printf("%lld\n", dp[n]);
	
	return 0;
}