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CF716D Complete The Graph

Luogu P2184 贪婪大陆

XJOI 高三楼

CF1105E Helping Hiasat

CF1106E Lunar New Year and Red Envelopes

bzoj 1015 [JSOI2008]星球大战starwar

XJ7191 Genius ACM

CF957D Riverside Curio

bzoj 1911 [Apio2010]特别行动队

CF1271E Common Number

CF1295E Permutation Separation

Luogu P3324 [SDOI2015]星际战争

CF1130E Wrong Answer

多项式总结

Ideas ans Tricks