#include <iostream>
#include <vector>

using namespace std;


int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    uint64_t rooms_count;
    cin >> rooms_count;
    vector< uint64_t > v(rooms_count);
    for (auto& coeff : v)
    {
        cin >> coeff;
    }

    bool is_first_section_end_found = false;
    uint64_t first_section_end_idx = 0;
    uint64_t result = 0;
    uint64_t tmp = 0;
    for (int i = 0; i < v.size(); ++i) {
        uint64_t coeff = v[i];
        if ((tmp & coeff) == 0)
        {
            tmp |= coeff;
            continue;
        }
        if (!is_first_section_end_found)
        {
            is_first_section_end_found = true;
            first_section_end_idx = i;
        }
        ++result;
        tmp = coeff;
    }

    for (int i = 0; i < first_section_end_idx; ++i) {
        uint64_t coeff = v[i];
        if ((tmp & coeff) == 0)
        {
            tmp |= coeff;
            continue;
        }
        result++;
        break;
    }

    if (result == 0)
    {
        cout << 1;
    }
    else
    {
        cout << result;
    }

    return 0;
}

/*
test1
7
1 1 2 12 8 6 16

2

test2
5
1 2 1 2 1

3

test3
6
1 2 3 4 5 6

4
*/