#include <iostream>

using namespace std;

int Beolvas(int n)
{
    do
    {
        cerr << "n=";
        cin >> n;
    }while (n < 0 || n > 366);
    return n;
}

int napok (int napoksz)
{
    int db = 0;
    int vak = 0;
    for(int i = 0; i < napoksz; i++)
    {
        int nap;
        cin >> nap;
        switch (nap)
        {
            case 0: db += vak + 1 ;
                    vak = 0;
                    break;
            case 1: vak++;
                    break;
        }
        if(vak == 7)
            return db;
    }
}

int main()
{
    int n = Beolvas(n);
    cout<< endl
        << napok(n);
    return 0;
}