摘要：Description ZS the Coder is playing a game. There is a number displayed on the screen and there are two buttons, ' + ' (plus) and '' (square root). In 阅读全文

摘要：Description ZS the Coder loves to read the dictionary. He thinks that a word is nice if there exists a substring (contiguous segment of letters) of it 阅读全文

摘要：Description A seven segment display, or seven segment indicator, is a form of electronic display device for displaying decimal numerals that is an alt 阅读全文