program z4;
uses crt;
var m,n,s,i:integer;
BEGIN
writeln('vvesti dv chisslo');
read(m);
read(n);
s:=n+m;
if s>9 then writeln('dv chislo')
else writeln('odnoznachnoe');
i:=10-s;
begin
if s>10 then writeln('chisko dv') else
writeln(i);
end;
END.