889 B | 889 chars
#include <bits/stdc++.h>
#define for1(s,n) for(int i = s; i < n; i++)
#define for1j(s,n) for(int j = s; j < n; j++)
#define foreach(k) for(auto i : k)
#define foreachj(k) for(auto j : k)
#define pb(a) push_back(a)
#define sz(a) a.size()
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
typedef vector <int> iv1;
typedef vector <vector<int>> iv2;
typedef vector <ll> llv1;
typedef unsigned int uint;
typedef vector <ull> ullv1;
typedef vector <vector <ull>> ullv2;
ll tc;
void lis(){
int n, i, x;
iv1 v;
iv1::iterator vv;
v.pb(2000000000);
cin >> n;
for1(0, n){
cin >> x;
if(x > *v.rbegin()) {
v.pb(x);
}
else{
vv = lower_bound(v.begin(), v.end(), x);
*vv = x;
}
}
cout << sz(v) << "\n";
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> tc;
while(tc--) {
lis();
}
}