Suggested problems

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Sept. 26, 2022, 4:55 p.m. by usmeds12

Biological Motivation

Buy Tramadol 225mg online and follow the prescription of doctor. Follow the prescription and do not alter the doses or use it for longer than prescribed. Using this medicine in higher doses can cause severe side effects rather than reducing pain.

This medicine works best if used as soon as the pain hits. Waiting for the pain to increase can significantly affect its effects. Doctors strictly recommend not giving Tramadol to a person without a prescription regardless of the similarity of health conditions.


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