Suggested problems

Feb. 11, 2021, 11:11 p.m. by SpellingBee889

Biological Motivation

The name of the popular puzzle is a play on the familiar phrase. It is also a reference to the hexagonal shape of the puzzle. The six-sided body is similar to the form of a honeycomb in a beehive.


A string is simply an ordered collection of symbols selected from some alphabet and formed into a word; the length of a string is the number of symbols that it contains.

An example of an DNA string (whose alphabet contains the symbols A, C, G, and T) is ATGCTTCAGAAAGGTCTTACG.

Given: A DNA string $s$ of length at most 1000 nucleotides.

Return: Four integers corresponding to the number of times that the symbols A, C, G, and T occur in $s$.

Sample Dataset


Sample Output

20 12 17 21