#include <bits/stdc++.h>
#include <cstdint>
using namespace std;
const int N = 3e5+5, M = 2e6;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int T;
    cin >> T;
    while (T--) {
        int64_t n;
        cin >> n;
        if (n & 1) cout << "-1\n";
        else {
            n >>= 1;
            int64_t upper = 1ull << (64 - __builtin_clzll(n));
            cout << n << ' ' << upper - n << '\n';
        }
    }
    return 0;
}