program filip;
var a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p:integer;
begin
readln (a,b);
c:=a div 100;
d:=a mod 100;
e:=d div 10;
f:=d mod 10;
g:=b div 100;
h:=b mod 100;
i:=h div 10;
j:=h mod 10;

k:=f*100;
l:=e*10;
m:=k+l+c;

n:=j*100;
o:=i*10;
p:=n+o+g;

if m>p then writeln (m);
if p>m then writeln (p);
if m=p then writeln (m);

readln;
end.