QOJ.ac
QOJ
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iosdjfasf
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$$T_G(x,y)=\sum\nolimits_{A\subseteq E} (x-1)^{k(A)-k(E)}(y-1)^{k(A)+|A|-|V|}$$
Rating changes
Accepted problems:42 problems
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Tried problems:0 problem
None