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);
}
}