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);
}
}


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