9.noip杂题选讲

noip杂题选讲

\(A\) CF1290C Prefix Enlightenment

\(B\) CF1458D Flip and Reverse

\(C\) CF1389F Bicolored Segments

\(D\) CF1580D Subsequence

\(E\) CF1720D2 Xor-Subsequence (hard version)

\(F\) CF1775E The Human Equation

\(G\) CF1763C Another Array Problem

\(H\) CF1876F Indefinite Clownfish

\(I\) CF193D Two Segments

\(J\) [AGC056C] 01 Balanced