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Lighthouse Flag Broadcast - Google 18th July Online Assessment

Every evening, the keeper of the Saltmere lighthouse raises a sequence of signal flags along the harbour mast. Each flag contains

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Given an array of values, determine the required result under the following conditions.

Input: [4, 8, 15, 16, 23, 42]

Output: 3

Constraints: 1 ≤ n ≤ 10⁵

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whose three largest strengths (3, 3, 2) already sum to at least 7.

solution.cpp

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Lighthouse Flag Broadcast - Google 18th July Online Assessment

MediumMed•1,077 views

Every evening, the keeper of the Saltmere lighthouse raises a sequence of signal flags along the harbour mast. Each flag contains

…

Given an array of values, determine the required result under the following conditions.

Input: [4, 8, 15, 16, 23, 42]

Output: 3

Constraints: 1 ≤ n ≤ 10⁵

Access the full question

Unlock the full statement, examples, constraints, and solution guidance.

Ending preview

…

whose three largest strengths (3, 3, 2) already sum to at least 7.

MediumMed•1,077 views

Asked at

Google

Author: Amit Dayal

Software Engineer

Expert in Data Structures & Algorithms. Building tools to help developers crack FAANG interviews.

Reviewed by Senior Engineers

GitHub

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Last updated Sep 2026