#include <iostream>
using namespace std;
int main () {
    int a,b,x=1,y=1,i,c=0,d=0,n=0,m=0;
    cin >>a>>b;
    while (x<=a)x=x*10;
    x=x/10;
    while (a>0){
          c++;
          if (c==1) n=n+a/x;
          if (c==2) n=n+(a/x*10);
          if (c==3) n=n+(a/x*100);
          a=a%x;
          x=x/10;
    }
    while (y<=b)y=y*10;
    y=y/10;
    while (b>0){
          d++;
          if (d==1) m=m+b/y;
          if (d==2) m=m+(b/y*10);
          if (d==3) m=m+(b/y*100);
          b=b%y;
          y=y/10;
    }
    if (n>m)cout<<n<<"\n";
       else cout<<m;
    return 0;
}