#include <iostream>

using namespace std;

int isPositive(int x)
{
    return x > 0;
}

int main()
{
    int num, total = 0;
    for(int i = 0; i < 7; i++)
    {
        cin>>num;
        total += isPositive(num);
    }
    cout<<endl<<total;
    return 0;
}