#include <iostream>
using namespace std;

int main ()
{
	int a,b;
	cin >> a >> b;
	int a1=a%10;
	a/=10;
	int a2=a%10;
	a/=10;
	int a3=a%10;
	int b1=b%10;
	b/=10;
	int b2=b%10;
	b/=10;
	int b3=b%10;
	int broj1=a3+a2*10+a1*100;
	int broj2=b3+b2*10+b1*100;
	if (broj1>broj2)
		cout << broj1;
	else 
		cout << broj2;
	//system("pause");
	return 0;
}