Richie Rich

CodeChefOpen on judge ↗

Are you the type of person who always ignores the option of brute-forcing the solution and tries to find more optimal ways to solve a question? If **yes**, then turn away from this question. Richie Rich was a rich guy, and being one he purchased quite a lot of laptops. He decided to set a 4 digit pin for each of them. After setting them, he realized that some of them are identical. He kno

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