#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <atcoder/all>
#include <iostream> // cout, endl, cin
#include <string> // string, to_string, stoi
#include <vector> // vector
#include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound
#include <utility> // pair, make_pair
#include <tuple> // tuple, make_tuple
#include <cstdint> // int64_t, int*_t
#include <cstdio> // printf
#include <map> // map
#include <queue> // queue, priority_queue
#include <set> // set
#include <stack> // stack
#include <deque> // deque
#include <unordered_map> // unordered_map
#include <unordered_set> // unordered_set
#include <bitset> // bitset
#include <cctype> // isupper, islower, isdigit, toupper, tolower
#include <math.h>
#include <iomanip>
#include <functional>
using namespace std;  
using namespace atcoder;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define repi(i, a, b) for (int i = (int)(a); i < (int)(b); i++)
typedef long long ll;
typedef unsigned long long ull;
const ll inf=1e18;  
using graph = vector<vector<int> > ;
using P= pair<ll,ll>;  
using vi=vector<int>;
using vvi=vector<vi>;
using vll=vector<ll>; 
using vvll=vector<vll>;
using vp=vector<P>;
using vvp=vector<vp>;
using vd=vector<double>;
using vvd =vector<vd>;
//string T="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
//string S="abcdefghijklmnopqrstuvwxyz";
//g++ main.cpp -std=c++17 -I .  
//cout <<setprecision(20);
//cout << fixed << setprecision(10);
//cin.tie(0); ios::sync_with_stdio(false);
const double PI = acos(-1);
int vx[]={0,1,0,-1,-1,1,1,-1},vy[]={1,0,-1,0,1,1,-1,-1};
void putsYes(bool f){cout << (f?"Yes":"No") << endl;}
void putsYES(bool f){cout << (f?"YES":"NO") << endl;}
void putsFirst(bool f){cout << (f?"First":"Second") << endl;}
void debug(int test){cout << "TEST" << " " << test << endl;}
ll pow_pow(ll x,ll n,ll mod){
    if(n==0) return 1; 
    x%=mod;
    ll res=pow_pow(x*x%mod,n/2,mod);
    if(n&1)res=res*x%mod;
    return res;
}
ll gcd(ll x,ll y){
    if(y==0)return x;
    return gcd(y,x%y);
}
 
ll lcm(ll x,ll y){
    return ll(x/gcd(x,y))*y;
}
template<class T> bool chmin(T& a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    else return false;
}
template<class T> bool chmax(T& a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    else return false;
}
// https://youtu.be/L8grWxBlIZ4?t=9858
// https://youtu.be/ERZuLAxZffQ?t=4807 : optimize
// https://youtu.be/8uowVvQ_-Mo?t=1329 : division
/*
ll mod =998244353;
//ll mod =1e9+7;
struct mint {
  ll x; // typedef long long ll;
  mint(ll x=0):x((x%mod+mod)%mod){}
  mint operator-() const { return mint(-x);}
  mint& operator+=(const mint a) {
    if ((x += a.x) >= mod) x -= mod;
    return *this;
  }
  mint& operator-=(const mint a) {
    if ((x += mod-a.x) >= mod) x -= mod;
    return *this;
  }
  mint& operator*=(const mint a) { (x *= a.x) %= mod; return *this;}
  mint operator+(const mint a) const { return mint(*this) += a;}
  mint operator-(const mint a) const { return mint(*this) -= a;}
  mint operator*(const mint a) const { return mint(*this) *= a;}
  mint pow(ll t) const {
    if (!t) return 1;
    mint a = pow(t>>1);
    a *= a;
    if (t&1) a *= *this;
    return a;
  }
 
  // for prime mod
  mint inv() const { return pow(mod-2);}
  mint& operator/=(const mint a) { return *this *= a.inv();}
  mint operator/(const mint a) const { return mint(*this) /= a;}
};
istream& operator>>(istream& is, const mint& a) { return is >> a.x;}
ostream& operator<<(ostream& os, const mint& a) { return os << a.x;}
// combination mod prime
// https://www.youtube.com/watch?v=8uowVvQ_-Mo&feature=youtu.be&t=1619
struct combination {
  vector<mint> fact, ifact;
  combination(int n):fact(n+1),ifact(n+1) {
    //assert(n < mod);
    fact[0] = 1;
    for (int i = 1; i <= n; ++i) fact[i] = fact[i-1]*i;
    ifact[n] = fact[n].inv();
    for (int i = n; i >= 1; --i) ifact[i-1] = ifact[i]*i;
  }
  mint operator()(int n, int k) {
    if (k < 0 || k > n) return 0;
    if (n<0) return 0;
    return fact[n]*ifact[k]*ifact[n-k];
  } mint p(int n, int k) { return fact[n]*ifact[n-k]; } } c(2000000); 
using vm=vector<mint> ;
using vvm=vector<vm> ;
*/
struct edge{
  int to; ll cost;
  edge(int to,ll cost) : to(to),cost(cost){}
};
using ve=vector<edge>;
using vve=vector<ve>;
struct Compress{
   vll a;
   map<ll,ll> d,d2;
   int cnt;
   Compress() :cnt(0) {}
   void add(ll x){a.push_back(x);}
   void init(){
     set<ll>s(a.begin(),a.end());
     for(auto y:s)d[y]=cnt++;
     for(auto&y:a)y=d[y];
     for(auto u:d)d2[u.second]=u.first;
   }
   ll to(ll x){return d[x];} //変換先
   ll from(ll x){return d2[x];}//逆引き
   int size(){return cnt;}
};
//vll anss;
// S : 持つデータの型 T : 範囲の型
template <class S, class T = int> struct IntervalManager {
    struct node {
        T l, r;
        S x;
        node(const T &l, const T &r, const S &x) : l(l), r(r), x(x) {}
        constexpr bool operator<(const node &rhs) const {
            if(l != rhs.l) return l < rhs.l;
            return r < rhs.r;
        }
    };
    const S unit;
    set<node> s;
    IntervalManager(const S &u = S()) : unit(u) {}
    IntervalManager(const vector<T> &a) {
        vector<node> setter;
        for(int l = 0; l < a.size(); l++) {
            int r = l;
            for(; r < a.size() and a[l] == a[r]; r++) {}
            setter.emplace_back(l, r, a[l]);
            l = r - 1;
        }
        s = set<node>(all(setter));
    }

    // x を含んだセグメントのイテレータを返す
    typename set<node>::iterator getIt(const T &x) {
        auto it = s.upper_bound(node(x, numeric_limits<T>::max(), 0));
        if(it == begin(s)) return end(s);
        it = prev(it);
        if(it->l <= x and x < it->r) return it;
        return end(s);
    }

    // x を含んだセグメントの情報を持ってくる
    node getSeg(const T &x) {
        auto it = getIt(x);
        if(it != end(s)) return *it;
        return node(x, x + 1, unit);
    }

    // x 以上をはじめて含むセグメントの iterator が帰ってくる
    typename set<node>::iterator nextIt(const T &x) {
        auto it = s.upper_bound(node(x, numeric_limits<T>::max(), 0));
        if(it == begin(s)) return it;
        return prev(it);
    }

    // x に設定されてる値を取得
    S get(const T &x) {
        auto it = getIt(x);
        if(it != end(s)) return it->x;
        return unit;
    }

    S operator[](T k) const { return get(k); }

    // [l, r) := x を set するときに消える区間加える区間ごとに関数を呼び出す
    // ただし、内包, 結合される [L, r) := x の区間も一旦消す
    template <typename ADD, typename DEL> void update(T l, T r, const S &x, const ADD &add, const DEL &del) {
        auto it = s.lower_bound(node{l, 0, x});
        while(it != end(s) and it->l <= r) {
            if(it->l == r) {
                if(it->x == x) {
                    del(r, it->r, x);
                    r = it->r, it = s.erase(it);
                }
                break;
            }
            if(it->r <= r) {
                del(it->l, it->r, it->x);
                it = s.erase(it);
            } else {
                if(it->x == x) {
                    r = it->r;
                    del(it->l, it->r, it->x);
                    it = s.erase(it);
                } else {
                    del(it->l, r, it->x);
                    node n = *it;
                    it = s.erase(it);
                    it = s.emplace_hint(it, r, n.r, n.x);
                }
            }
        }

        if(it != begin(s)) {
            it = prev(it);
            if(it->r == l) {
                if(it->x == x) {
                    del(it->l, it->r, it->x);
                    l = it->l;
                    it = s.erase(it);
                }
            } else if(l < it->r) {
                if(it->x == x) {
                    del(it->l, it->r, it->x);
                    l = min(l, it->l);
                    r = max(r, it->r);
                    it = s.erase(it);
                } else {
                    if(r < it->r) {
                        it = s.emplace_hint(next(it), r, it->r, it->x);
                        it = prev(it);
                    }
                    del(l, min(r, it->r), it->x);
                    node n = *it;
                    it = s.erase(it);
                    it = s.emplace_hint(it, n.l, l, n.x);
                }
            }
        }
        if(it != end(s)) it = next(it);
        add(l, r, x);
        s.emplace_hint(it, l, r, x);
    }

    void update(T l, T r, const S &x) {
        update(
            l, r, x, [](T, T, S) {}, [](T, T, S) {});
    }

    void show() {
        for(auto e : s) {
            cerr << "("
                 << "[" << e.l << ", " << e.r << "): " << e.x << ") ";
        }
        cerr << endl;
    }
};
vll anss;
void solve(int test){
  int n; cin >> n;
  vi a(n);rep(i,n)cin >> a[i],a[i]--;
  vi id(n);rep(i,n)id[a[i]]=i;
  ll ans=0;
  IntervalManager<int> im;
  auto add = [&](int l, int r, int x) {};
  auto del = [&](int l, int r, int x) { add(r, l, x); };
  rep(i,n)im.update(i,i+1,0,add,del);
  rep(minv,n){
    ll si=im.s.size();
    chmax(ans,si);
    im.update(id[minv],id[minv]+1,1);
  }
  anss.push_back(ans);
}
//g++ main.cpp -std=c++17 -I .
int main(){cin.tie(0);ios::sync_with_stdio(false);
  int t=1;cin >> t;
  rep(test,t)solve(test);
 for(auto u:anss)cout << u << endl;
}