Suggested problems

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Biological Motivation

With or without a healthcare provider's prescription, you can Buy Adderall Online, but you need to follow the guidelines to get the best effect and avoid side reactions. Take Adderall by mouth on an empty stomach, but if you have suffered from any medical condition, it is better to take it with food. Take the oral administration 1 to 3 times for an interval of 4 to 6 hours a day, and the first dose should be right after you wake up, and the last dose before bedtime.


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