# -*- coding: utf-8 -*-
first=int(input())
count=1
countznak=0
for count in range(1,10):
    chester=int(input())
    count+=1
    if (first<0 and chester>0) or (first>0 and chester<0):
        countznak+=1
        first=chester
    elif (first<0 and chester<0) or (first>0 and chester>0):
        first=chester
else:
    print(countznak)