/*input
5
1 2 3 4 5
*/
#include<bits/stdc++.h>
using namespace std;
const int mod=1e9 + 7;
#define int long long
const int inf=1e18;
#define pii pair<int, int>
#define f first
#define s second 
#define mp make_pair
#define FOR(i, n) for(int i=1;i<=n;i++)
#define TRACE(x) cerr << #x << " = " << x << endl 
//Trace prints the name of the variable and the value.
void solve()
{
	int n;cin>>n;assert(n<=5e5);int mval=inf;set<int> vals;
	for(int i=1;i<=n;i++)
	{
		int cur;cin>>cur;
		assert(vals.count(cur)==0);vals.insert(cur);
		mval=min(mval, cur);
	}
	cout<<mval<<endl;
}
signed main()
{
	ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
/*	freopen("input1.txt", "r", stdin);
	freopen("output1.txt", "w", stdout);*/
	int t;cin>>t;
	while(t--) solve();
} 

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