# coding: utf-8
# Your code here!
N=int(input())
A=list(map(int,input().split()))
l=[0]*N

count=0
for i in range(N):
    if i==0:
        count+=1
        l[i]=1
    else:
        if A[i-1]==A[i]:
            count+=1
            l[i]=1
        else:
            if l[i-1]==1:
                pass
            else:
                count+=1
                l[i]=1

#print(l)
print(count)