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1、概述        2、编程   #include <unistd.h> #include <stdio.h> #include <fcntl.h…

数据结构——栈 栈的英文为(stack)栈是一个先入后出(FILO-First In Last Out)的有序列表。栈(stack)是限制线性表中元素的插入和删除只能在线性表的同一…

There is a row of n houses, where each house can be painted one of three colors: red, blue…

E – Takahashi’s Anguish(图论、基环树、并查集) Problem 现在有/(N/)个人排队，但如果第/(X_i/)个人排到第/(i/)…