13级春季校赛的热身题,但优化后我的代码也超时了,后来看了看学长的解法,觉得最简单的还是map,再一次感受到了map的强大. 题目描述如下 Description There is an integer set A. How many couples of a and b, which can make a+b=0(a∈A, b∈A,a<=b). Input There are multiple test cases. The first line is an integer T indicat…
include "stdafx.h" #include<iostream> #include<vector> #include<algorithm> #include<iomanip> using namespace std; class Visit { public: int countPath(vector<vector<int> > map, int n, int m) { int count=0; int…
仰天长啸 Server Tomcat v6.0 Server at localhost was unable to start within 45 seconds... 当启动tomcat时候出现 Server Tomcat v6.0 Server at localhost was unable to start within 45 seconds. If the server requires more time, try increasing the timeout in the ser…
key:3-key key:/v1.02-key Exception in thread "main" java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429) at java.util.HashMap$EntryIterator.next(HashMap.java:1463) at java.util.HashMap$EntryIter…
