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确定非零项 由恒等式|X∩S|+|Y∩S|≡|(X⊕Y)∩S|(mod2)|X∩S|+|Y∩S|≡|(X⊕Y)∩S|(mod2),得到简化 1.若X,YX,Y对于SS合法,则X⊕YX⊕Y同样合法,只需要考虑线性基dd中元素对于SS的限制 2.假设已知S,TS,T非零,则S⊕TS⊕T非零,因此可以考虑用一个线性基d′d′来描述合法元素 确定|d′...
则⟨i,k⟩+⟨j,k⟩≡⟨i⊕j,k⟩(mod 2)⟨i,k⟩+⟨j,k⟩≡⟨i⊕j,k⟩(mod 2),即乘法(and)关于加法(xor)的分配律。 首先大家肯定都会 O(2rank(A))O(2rank(A)),即枚举线性基的子集。 对于m≤35m≤35,直接用 meet-in-the-middle,把线性基分成高位和低位两部分,其中低位部...
Actually we offer you the finest MOD APKs and Games of the Android section and we slowly expand to the iOS section as well. But games, Android MODs & iOS MODs are not the only things we can offer you. We have tutorials, tools, a very friendly, active and solid community which will ...