Suggested problems

World’s Best Top 10 Nightlife Cities

May 6, 2022, 7:10 p.m. by Winning Paradise

Biological Motivation

Excited about the places where you can enjoy a great night with food, drinks, dancing, and a lot more. Enjoy the [top 10 nightlife cities][1] that offer you everything from dive bars to swanky hotel lounges to trendy dance clubs. Read the complete blog at:


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