#include <bits/stdc++.h>
#define ll long long int
#define ld long double
using namespace std;

void mainSolve()
{
  int n;
  cin >> n;
  vector<int> v(n);
  for (int i = 0; i < n; i++)
    cin >> v[i];
  int ans = n;
  for (int i = 1; i < n; i++)
    if (v[i] == v[i - 1])
      --ans;
  cout << ans << endl;
}

int main()
{
#ifndef ONLINE_JUDGE
  freopen("input.txt", "r", stdin);
  freopen("output.txt", "w", stdout);
#endif
  int t;
  cin >> t;
  while (t--)
  {
    mainSolve();
  }
  return 0;
}