#include<bits/stdc++.h>
using namespace std;
using ui=unsigned int;
using ll=long long;
using ull=unsigned long long;
using i128=__int128_t;
using u128=__uint128_t;
using ld=long double;
void solve()
{//简单的模拟 甚至把公式给你了 按题目所述编写代码即可
int n,q,l,r;
cin >> n >> q;
vector<ll>v(n+1,0);
for(int i=1;i<=n;i++) cin >> v[i];
cin >> l >> r;
ll temp=v[1];
for(int i=2;i<=n;i++)
{
temp=temp+v[i]-(temp^v[i]);
}
cout << temp << "\n";
}
int main()
{
ios::sync_with_stdio(false);
cin.tie(nullptr);
int t=1;
cin >> t;
while(t--)
{
solve();
}
return 0;
}