AbsInt returns the absolute value of n.

BenchmarkSolution runs a benchmark of s with the provided input.

Find the GCD of two integers.

Convert a rune in an int.

IntsFromString returns a slice of integers in str, where these numbers are separated by sep.

Find the least common multiple of a slice of integers.

LinesFromReader returns a slice of all lines in r.

Find the maximum of a slice of integers.

Print logs values to standard error.

Printf logs values to standard error with the provided format.

Println logs values to standard error, then starts a new line.

TestSolution tests whether s, when provided with input, provides the expected answer.

System of 2D coordinates.

System of 3D coordinates.

A Solution solves an Advent of Code problem.

A 2D grid of int.

The SolutionFunc type is an adapter to allow the use of ordinary functions as solutions.