#region Header
#!/usr/bin/env python3
# from typing import *

import sys
import io
import math
import collections
import decimal
import itertools
from queue import PriorityQueue
import bisect
import heapq

def input():
    return sys.stdin.readline()[:-1]

sys.setrecursionlimit(1000000)
#endregion

# _INPUT = """9
# 1 2 2 2 1 3 2 2 2
# """
# sys.stdin = io.StringIO(_INPUT)


def main():
    N = int(input())
    A = list(map(int, input().split()))

    i = 0
    n = 0
    zunda = False
    last_size = -1
    while i < N:
        if not zunda:
            zunda = True
            n += 1
            last_size = A[i]
        else:
            if A[i] == last_size:
                n += 1
            else:
                zunda = False
        i += 1
    print(n)

if __name__ == '__main__':
    main()