"2022 ICPC亚洲区域赛昆明赛题：Amino Acids链式反应问题分析"

The 46th ICPC Asia Kunming Regional Programming Contest took place on April 17, 2022, featuring a variety of challenging problems for participants to solve. One of the problems presented was Problem A, titled "Amino Acids". The task involved considering 10 common amino acids - Alanine, Asparagine, Aspartate, Cysteine, Glutamine, Glutamate, Glycine, Methionine, Serine, and Threonine - and exploring the ways in which they can be linked together through peptide bonds. In the natural world, there are a total of 20 common amino acids, but for the purposes of this problem, only 10 were taken into account. The participants were required to understand the concept of condensation reaction, through which n amino acids can be linked by n-1 peptide bonds to form a peptide chain. The goal of the problem was to determine the maximum possible length of a peptide chain that can be formed using a given set of amino acids. Participants were provided with a standard input file and were expected to produce a standard output file within a time limit of 1 second and a memory limit of 256 megabytes. This problem required a combination of knowledge of biochemistry and computational thinking skills to determine the optimal solution. Overall, the Amino Acids problem at the 46th ICPC Asia Kunming Regional Programming Contest challenged participants to think critically and creatively to solve a complex biological puzzle within a constrained computational environment. It tested their ability to apply theoretical knowledge to practical problems and showcased the intersection of computer science and natural sciences in a competitive programming setting.