# include <stdio.h>


int f(int x)
{
	int ret=(x%10)*100;
	x/=10;
	ret+=(x%10)*10;
	x/=10;
	ret+=x;
	return ret;
}


int main()
{
	int a,b;
	scanf("%d%d",&a,&b);
	a=f(a);
	b=f(b);

	if(a>b)printf("%d\n",a);
	else printf("%d\n",b);

	return 0;
	}