var
a,b,c,max:integer;
begin
read(a,b,c);
if a > b then
max:=a
else
max:=b;
if max > c then
write(max)
write(c);
end.
var
a,b,c,max:integer;
begin
read(a,b,c);
if a > b then
max:=a
else
max:=b;
if max > c then
write(max)
else
write(c);
end.