a=[""]+"ein zwei drei vier fuenf sechs sieben acht neun zehn elf zwoelf".split() b="zwanzig dreissig vierzig fuenfzig sechzig siebzig achzig neunzig".split() i=input() j=i%10 r="" if i<1:r="null" if i/1000:r=a[i/1000]+"tausend";i%=1000 if i/100:r+=a[i/100]+"hundert";i%=100 if i<13:a[1]="eins";r+=a[i] elif i<20:r+=a[j]+a[10] else:r+=(a[j] and a[j]+"und")+b[i/10-2] print r
Note that non-ascii characters in the above source code will be escaped (such as \x9f).