两个网站都通过

#include <iostream>
using namespace std;
const int N = 1010;

int n;
int a[N];

int main()
{
    cin >> n;
    for(int i = 0; i < n; ++ i) cin >> a[i];

    int cnt = 0, i = 0;
    while(i < n)
    {
        int j = i + 1;
        while(a[j] == a[j - 1] && j < n) j ++;
        cnt ++;
        i = j;
    }

    cout << cnt << endl;

    return 0;
}