Abs returns absolute value of `a`.

BoolToInt converts bool to int (true -> 1, false -> 0).

CountBinaryOnes returns number of 1s in binary representation of `n`.

Returns greates common divisor of numbers from `a`.

Ints returns all integer numbers in s, no matter which delimitters are used.

IsDigit returns true if ch is a digit.

Returns least common multiple of numbers from `a`.

MakeSlice return slice of size `n` filled with the value `elem`.

MapContains returns true if map `m` contains key `k`.

MapSortedValues returns values of map `m` sorted in ascending order.

PartialSum returns partial sum list of slice `a`: []int{a[0], a[0]+a[1], ...}}.

ReadInputLines reads lines from os.Stdin.

ReadInput reads all bytes from os.Stdin.

Reversed returns reversed copy of slice `a`.

Solves equation a*x^2 + b*x + c = 0.

Split splits slice `a` by value `by`.