mqssNW - Online C++ Compiler & Debugging Tool

#include <iostream>
using namespace std;

int main() {

	int L1, R1, R2, L2;
	cin >> L1>> R1>> L2>> R2;
	if (L2 < R1 && R2> L1 && R2>R1&&L1<L2) {
		cout << L2 <<" "<< R1;
	}
	else if (L1 > L2 && R2 < R1 && L2 < R1 && L1 < R2) {
		cout << L1 <<" "<< R2;
	}
	else if (L1 == L2 && R1 == R2) {
		cout << L1 << " " << R2;
	}
	else { cout << -1; }
	return 0;
}