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();
            if(input <= 0){
                break;
            }else{
                count++;
            }
        }

        System.out.println(count);
    }
    
}