Given a positive integer, x, return a positive integer, y, which is the xth term in the sequence [1 2 2 3 3 3...], in which one instance of the number 1 is followed by two instances of the number 2, followed by three instances of the number 3, and so on.

Example 1:

x = 5

y = 3

Example 2:

x = 105

y = 14

Solve

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Last Solution submitted on Jan 01, 2026

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Pauli Huusari Riccardo G. Alexander Ross lidong

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