program filip;
var a,b,a1,b1,k,p,c,t,r,e,z,o:integer;
begin
readln(a,b);
p:=a mod 10 ;
k:=a mod 100;
c:=k div 10;
t:=a div 100;
a1:=(p*100)+(c*10)+(t*1);

r:=b mod 10;
e:=b mod 100;
z:=e div 10;
o:=b div 100;
b1:=(r*100)+(z*10)+(o*1);
if b1>a1 then writeln(b1);
if a1>b1 then writeln (a1);
if b1=a1 then writeln(a1);
readln;
end.