func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long int mod = 1e9 + 7;   const int OO = INT_MAX, P = 10000;   int xd[] = {1, 0, -1, 0, -1, 1, 1, -1};   int yd[] = {0, -1, 0, 1, 1, 1, -1, -1};   int main() {     ios::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);     long long int t;     cin >> t;     while (t--) {       long long int l, r;       cin >> l >> r;       if (l * 2 > r)         cout << -1 <<     << -1 <<   n ;       else         cout << l <<     << 2 * l <<   n ;     }     return 0;   }   