#include <stdio.h>

int reveres(int n) {
    int n1,n2,n3;
    n1=n/100;
    n2=n/10%10;
    n3=n%10;
    return 100*n3+10*n2+n1;
}

int main() {
    int a,b;
    scanf("%d %d",&a, &b);
    a=reveres(a);
    b=reveres(b);
    if (a>b) printf("%d",a);
    else printf("%d",b);
    return 0;
}