Nikita And Her Despised Number

CodeChefOpen on judge ↗

Nikita is one of the most talented students of WCE, but she hates the Digit 'D' more than anything else. One day her Maths Teacher asked her a question, How many numbers are there which can have 'X' digits only? She decided that she will report the answer but will not include any number which contains her despised digit! Her Maths Teacher Got Angry and decided not to tell the value of 'X' directly

HINT LADDERno hints yet

L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

🔒

L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI