Title meaning: Define a string as \(super\) palindrome string as:< br> \(\bullet\) The string s is a substring of the main string str, namely \(s = str_lstr_{l + 1} \cdots str_r\)
\(\bullet\) stri
Tag: Multi-school
Hang Technology Multi-Biography First –B-Operation
Title description There is an integer sequence a of length n and there are two kinds of operations:
0 lr: select some numbers from al.. .ar so that their xor sum is maximum, and print the maximum