two intervals

#include <iostream>
#include <algorithm>

using namespace std;

int main()
{
     long long l1,r1,l2,r2;
     cin>>l1>>r1>>l2>>r2;
     max({l1,l2});
     min({r1,r2});
     if (l2>r1||l1>r2)
     {
         cout<<"-1";
     }
     else
     {
         cout<<max({l1,l2})<<" "<<min({r1,r2});
     }
     return 0;

}