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Contests/Codeforces/Codeforces Round 956/A. Array Divisibility
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Codeforces Round 956

A. Array Divisibility

ArrayMath
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Problem Statement

Official algorithmic problem description and constraints.

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An array of integers π‘Ž1,π‘Ž2,β‹―,π‘Žπ‘› is beautiful subject to an integer π‘˜ if it satisfies the following:

  • The sum of π‘Žπ‘— over all π‘— such that π‘— is a multiple of π‘˜ and 1≀𝑗≀𝑛, itself, is a multiple of π‘˜.
  • More formally, if βˆ‘π‘˜|π‘—π‘Žπ‘— is divisible by π‘˜ for all 1≀𝑗≀𝑛 then the array π‘Ž is beautiful subject to π‘˜. Here, the notation π‘˜|𝑗 means π‘˜ divides π‘—, that is, π‘— is a multiple of π‘˜.

Given π‘›, find an array of positive nonzero integers, with each element less than or equal to 10^5 that is beautiful subject to all 1β‰€π‘˜β‰€π‘›.

It can be shown that an answer always exists.

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