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#include <stdio.h>
#include <vector>
#include <map>
#include <unordered_set>
#include <queue>
#include <set>
#include <unordered_map>
#include <math.h>
#include <limits.h>
#include <algorithm>
#include <functional>
#include <iterator>
#include <algorithm>
#include <string>
#include <iostream>

using namespace std;

#define pb push_back
#define mp make_pair

typedef long long ll;
typedef unsigned long long ull;

using namespace std;

const ll MOD = 1000000007;

ll com[300002];

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(NULL);

  int n, ai;
  cin >> n;

  vector<int> numbers;
  for (int i=0; i<n; ++i) {
    cin >> ai;
    numbers.pb(ai);
  }

  com[n-1] = 0;
  com[n] = 1;

  for (int i=n-1; i>=0; --i) {
    ll csum = 0;
    for (int j=i; j<n; ++j) {
      csum += numbers[j];
      if ((csum % MOD) % 2 == 0) {
        com[i] = (com[i] + com[j+1]) % MOD;
      }
    }
  }

  cout << com[0] << endl;

  return 0;
}