minmax容斥/扩展minmax容斥瞎笔记

(large max(S) = sum_{Tin S} -1^{|T|-k} imes inom{k-1}{|T|-1}min(T))

(large E(max(S)) = sum_{Tin S} -1^{|T| -k} imes inom{k-1}{|T|-1}E(min(T)))