#include <cstdlib>
#include <iostream>

using namespace std;

int veci( int a, int b )
{
	int an, bn;
	an = a /100;
	a -= a / 100 * 100;
	an += a / 10 * 10;
	a -= a / 10 * 10;
	an += a * 100;
	bn = b /100;
	b -= b / 100;
	bn += b / 10 * 10;
	b -= b / 10;
	bn += b * 100;
	if ( an < bn )
		return an;
	else
		return bn;
}

int main()
{
	int a, b, c;
	cin >> a >> b;
	c = veci( a, b );
	cout << c << endl;
	return 0;
}