E. Vlad and a Pair of Numbers

#include<bits/stdc++.h>
#define ll long long
#define fi first
#define se second
using namespace std; 
int main(){

    int t;
    std::cin>>t;
    while(t--){ 

        int x;
        std::cin>>x;
        int cur = x/2;
        if(x&1)puts("-1");
        else {
            int b=3*cur;
            if((cur^b) !=x || (cur+b)/2!=x)puts("-1");
            else std::cout<<cur<<' '<<3*cur<<'\n';
        }
        



    }


    return 0;
}