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 n=scanner.nextInt();//输入整数
            if(n>0)//统计
            count++;
            else
            break;
        }
        System.out.println(count);

    }
}