Binary Tree Level Order Traversal 本题收获: 1.vector<vector<int>>的用法 vector<vector<int> >注意<int>后面的空格,vector<vector<int>>表示的是二位向量. 输出格式(后面代码),不知道大小时,在vector中用push_back(vector<int>()) 2.树用迭代 题目: Given a binary tr
题目链接:http://codeforces.com/problemset/problem/93/B B. End of Exams time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Students love to celebrate their holidays. Especially if the holiday is th
11991 - Easy Problem from Rujia Liu? Though Rujia Liu usually sets hard problems for contests (for example, regional contests likeXi’an 2006, Beijing 2007 and Wuhan 2009, or UVa OJ contests like Rujia Liu’s Presents 1and 2), he occasionally sets easy
@Echo offtitle 双心一键获取winsxs的写入权限,解决VC运行库安装error1935等错误set path=%path%;%~dp0setlocal EnableDelayedExpansionset /P dv=请输入要处理的windows的根路径(例如C:,直接回车默认为C:盘):if not defined dv set dv=C: ::获取管理员权限TAKEOWN /F "%dv%\Windows\winsxs" /r /d YICACLS "%dv
当我们编程时,有时会出现如下错误:TypeError: '>' not supported between instances of 'str' and 'int' 如下图: 这是因为input()返回的数据类型是str类型,不能直接和整数进行比较,必须先把str转换成整型,使用int()方法:age = int(input ("请输入你的年龄:")) 改正之后为: 这样程序就达到了预期的效果了