#include <bits/stdc++.h> using namespace std; #define sync {ios_base ::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);} #define rep(n) for(int i = 0;i<n;i++) #define rep1(a,b) for(int i = a;i<b;i++) #define int long long int #define mod 1000000007 int n; void solve() { cin>>n; int a[n]; for(int i=0;i<n;i++){ cin>>a[i]; } int answer = 1; for(int i=1;i<n;i++){ if(a[i]!=a[i-1]) answer++; } cout<<answer; } int32_t main() { #ifndef ONLINE_JUDGE freopen("input.txt","r",stdin); freopen("output.txt","w",stdout); #endif sync; int t = 1; cin>>t; while(t--){ solve(); cout<<"\n"; } return 0; }