program wqe3;
var a,b,c:integer;f1,f2:text;  
begin
assign(f1,'input.txt');
reset(f1);
readln(f1,a,b,c);
assign(f2,'output.txt');
rewrite(f2);
if ((a+b)>c) and ((a+c)>b) and((b+c)>a) then
writeln(f2,'tak')
else
writeln(f2,'ni');
close(f1);
close(f2);
end.