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Reverse Polish Notation (RPN) is a mathematical notation in which every operator follows all of its operands, in contrast to Polish notation, which pu …

The hypnotic Dreamcatcher Clock. Configure your own display style, colors and background image. Millions of possible combinations.免費玩Dreamcatcher Cloc …

In the early days of Unix, a date-tagged list of historical events was used by system administrators to add some interest to the system's Message of t …