PHONEBOOK DILEMMA

CodeChefOpen on judge ↗

When we start dialling a number in our mobile phones, suggestions crop up on the screen from our saved contacts. Suppose a number is saved as 9433019343, and we start typing 94, then this above number will show up. Now this seemed too boring to Mr Sinha and he installed a special phone dialler app. This app matches the subsequence typed with all the phone numbers where that subsequence is presen

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