#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return true; } return false; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return true; } return false; }
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define mp make_pair
#define si(x) int(x.size())
const int mod=998244353,MAX=300005,INF=1<<30;

int main(){
    
    std::ifstream in("text.txt");
    std::cin.rdbuf(in.rdbuf());
    cin.tie(0);
    ios::sync_with_stdio(false);
    
    ll Q;cin>>Q;
    while(Q--){
        ll N;cin>>N;
        if(N&1) cout<<-1<<"\n";
        else{
            ll a,b;
            for(ll t=60;t>=0;t--){
                if(N&(1LL<<t)){
                    b=(1LL<<(t+1))-1-N;
                    break;
                }
            }
            a=N/2;
            cout<<a<<" "<<b<<"\n";
            assert((a+b)==(a^(N+b)));
        }
    }
}