BenchmarkSolution runs a benchmark of s with the provided input.

IntsFromString returns a slice of integers in str, where these numbers are separated by non-number runes.

LinesFromReader returns a slice of all lines in r.

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.

A Solution solves an Advent of Code problem.

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