백준 2908

#include <iostream>
#include <string>
using namespace std;
int main() {
	string n1, n2;
	cin >> n1 >> n2;
	string num1, num2;
	num1 = n1[2];
	num1 =num1+ n1[1] + n1[0];
	num2 = n2[2];
	num2 = num2 + n2[1] + n2[0];
	if (num1 > num2)
		cout << num1;
	else
		cout << num2;
}