var a,s: integer;
begin
readlnaaa;
a:=absaaa;
s:=adiv100a div 100adiv100+adiv10mod10a div 10 mod 10adiv10mod10 + amod10a mod 10amod10;
writelnsss;
end.
var a,s: integer;
begin
readlnaaa;
a:=absaaa;
s:=adiv100a div 100adiv100+adiv10mod10a div 10 mod 10adiv10mod10 + amod10a mod 10amod10;
writelnsss;
end.