var a,b,c,d,e:integer;
begin
read(a); readln(b);
c:=a div 100; d:=a mod 100 div 10; e:=a mod 10;
a:=e*100+d*10+c;
c:=b div 100; d:=b mod 100 div 10; e:=b mod 10;
b:=e*100+d*10+c;
if a>b then writeln(a)
       else writeln(b);
readln;
end.