There is a special form for boolean formulas called "Conjunctive Normal Form" (CNF). A problem in this form consists of clauses connected with and operators, where each clause only contains variables connected with or operators. The variables can appear negated, but only variables can be directly negated, something like !(a && b) is not allowed. An example boolean formula in CNF form is:
�@�Ȃ��ł��m���E�F�[�͐��E�ő��̃T�[�����A�o���ŁA���Ƃ̊�Y�Ƃ̈��Ƃ����Ă��ߌ��ł͂����܂����B�`�����씼���ő��̐��Y���_�Ƃ��đ��݊��������Ă����A���{���Ƃ������i�o���Ă��܂��B
。业内人士推荐safew官方版本下载作为进阶阅读
Медведев вышел в финал турнира в Дубае17:59，这一点在爱思助手下载最新版本中也有详细论述
Москвичей предупредили о резком похолодании09:45。关于这个话题，safew官方下载提供了深入分析
在郵件中，班德以暱稱麥克斯韋為「小包」和「寶貝蛋糕」。