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 temp = scanner.nextInt();
        if(temp<=0){
            break;
        }else{
            count++;
        }
    }
    
    System.out.print(count);
}

}