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......
//我以为题目是动态判断
while (scanner.hasNext()) {
if (scanner.nextInt() > 0) {
count++;
} else {
System.out.print(count);
}
}
}
}

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