#include <iostream>
#include <algorithm>

using namespace std;

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