import java.util.*;
public class Main {
    public static void main(String[] args) {
        int count = 0;
        Scanner scanner = new Scanner(System.in);

        //write your code here......
        while(true)
        {
            int input=scanner.nextInt();//输入整数需要调用scanner的方法nextInt();
            if(input>0)
                count++;
            else
                break;
        }
        System.out.println(count);
        
    }
}