多校联训 DS 专题

CF1039D You Are Given a Tree

CF983E NN country

[AGC001F] Wide Swap

CF1578B Building Forest Trails

CF1129D Isolation

[AGC015E] Mr.Aoki Incubator

[AGC007E] Shik and Travel

CF1446D2 Frequency Problem (Hard Version)

CF765F Souvenirs

CF1458D Flip and Reverse

【UR #22】月球列车

GYM 103371M Yet Another Range Query Problem

CF643G Choosing Ads

CF1209G2 Into Blocks (hard version)

CF1270H Number of Components

【UR #19】前进四

CF1558F Strange Sort

CF1137F Matches Are Not a Child's Play

CF1034D Intervals of Intervals

【UNR #5】诡异操作