program t5p4n3;

var a,b,n,d,m: integer;

begin

writeln ('vvedit chislo');

readln (n);

m:=n;

d:=0;

repeat

a:=m mod 10;

d:=d*10+a;

m:=m div 10;

until m=0;

if d=n then

writeln ('tak ',d)

else

writeln ('ni ',d);

readln

end.