Suggested problems

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March 6, 2023, 3:52 p.m. by usmeds12

Biological Motivation

Xanax is an oral prescription used to treat anxiety disorders, panic disorders and phobia with or without agoraphobia. It belongs to the benzo group of drugs that increase GABA levels in the body and enhance neurotransmitter activity. Stress, anxiety, hypertension, depression and insomnia are all caused by low GABA levels in the brain. However, xanax is highly addictive medication used in high doses or for an extended period (more than 12 weeks). As a result, always take it under supervision of pharmacists and at recommended dosage.


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