#include<bits/stdc++.h>
using namespace std;
#define int long long
int a[500005];
signed main(){
    int t;
    cin>>t;
    while(t--){
        int n,s,t;
        cin>>n>>s>>t;
        for(int i=1;i<=n;++i)cin>>a[i];
        if(s==t)cout<<"0\n";
        else cout<<2*(a[s]|a[t])<<"\n";
    }
}