P16113 [USTCPC 2026] Acronym

As everyone knows, the university where “Kruskal-chan” is located is USTC. So Kruskal-chan wants to quiz you: what can USTC stand for? Surely you can give a brilliant answer.

You need to output a string whose **acronym** could be USTC. An **acronym** is defined as follows: - An acronym is a new word formed by taking the first letter of each word in a phrase. - In the original phrase, the first letter of each content word must be uppercase, and the first letter of each function word must be lowercase; all non-initial letters must be lowercase. - For all content words, their first letters must be kept. - For all function words, you may choose whether to keep their first letters; if kept, make them uppercase. Output one line containing a string with spaces, such that its acronym could be USTC. As long as there exists at least one way to form an acronym equal to USTC from your output, it will be accepted.

The input is a string: USTC.

Output one line consisting of several words separated by spaces.

Translated by ChatGPT 5