program Filip;
var a,b,q,w,z,e,r,d,f,t: integer;
begin
        readln(d, f);
        q:=d div 100;
        w:=d div 10 - 10*q;
        z:=d - 100*q -10*w;

        e:=f div 100;
        t:=f div 10 -10*e;
        r:=f -100*e -10*t;

        a:=100*z + 10*w +q;
        b:=100*r + 10*t +e;
        if b < a then writeln(a)
                 else writeln(b);
        readln;
end.