#include<stdio.h>


int main() {
    int a,b,aj,ad,ass,bj,bd,bs,k,l,c;
 
    scanf("%d %d", &a,&b);
    l=a/10;
    aj=a-(l*10);
    l=(a-aj)/100;
    ad=(a-aj)-(l*100);
    ad=ad/10;
    ass=a/100;            
                     
    l=b/10;
    bj=b-(l*10);
    l=(b-bj)/100;
    bd=(b-bj)-(l*100);
    bd=bd/10;
    bs=b/100;  
            
    k=aj*100+ad*10+ass;
    c=bj*100+bd*10+bs;
    
    if(k>c){
             printf("%d",k);
            }
   if(k<c){
             printf("%d",c);
            }
   if(k==c){
             printf("%d",k);
            }
    
   
 return 0;   
}