var a,b:longint;
f,g:text;
begin
assign(f,'adunare.in');
reset(f);
readln(f,a);
readln(f,b);
assign(g,'adunare.out');
reset(g);
rewrite(g);
if a+b>2000000000 then writeln(g,0) else
writeln(g,a+b);
close(g);
close(f);
end.