#include<cstdio>
#include<iostream>
//#include<conio.h>

using namespace std;

int main (void)
{
    int a, b, a1, b1;
    scanf("%d%d",&a,&b);
    a1=100*(a%10);
    a/=10;
    a1+=10*(a%10);
    a/=10;
    a1+=a;
    b1=100*(b%10);
    b/=10;
    b1+=10*(b%10);
    b/=10;
    b1+=b;
    
    printf("%d\n",max(a1,b1));
 //   getch();
    return 0;
}