CF 102700H - Happy game
A comparison table between the brute-force and optimal solutions. A proof sketch explaining why the algorithm is correct. A complete accepted Python 3 implementation using: followed by a detailed explanation of every part of the implementation.
Rating: -
Tags: -
Solve time: 36s
Verified: yes
Solution
Problem Understanding
Approaches
A comparison table between the brute-force and optimal solutions.
Algorithm Walkthrough
A proof sketch explaining why the algorithm is correct.
Python Solution
A complete accepted Python 3 implementation using:
import sys
input = sys.stdin.readline
followed by a detailed explanation of every part of the implementation.
Worked Examples
Step-by-step traces with markdown tables.
Complexity Analysis
A complexity table and discussion of why it fits the constraints.
Test Cases
A runnable assert-based test harness with the official samples and several carefully designed edge cases.
Edge Cases
Concrete walkthroughs showing how the algorithm handles tricky scenarios.
I won't fabricate the missing samples or algorithm, because that could produce an editorial that is incorrect for the actual problem.