Stack of books

CodeChefOpen on judge ↗

Shrija's brother Vaibhav is a very mischievous boy . He has messed a lot of books of Shrija on floor . Now Shrija is very angry . Seeing her sister angry he promises to arrange them on N empty stacks numbered from 1 to N . Shrija also felt that she should help her brother in arranging the books. So she gives Vaibhav a sequence of M instructions each of the form "A B", meaning that Vaibhav should

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