Basic Calculator IIImplement a basic calculator to evaluate a simple expression

Problem Description After coding so many days,Mr Acmer wants to have a good rest

  package test;import java.io.File;import java.io.FileNotFoundExceptio

 分析：直接用最大字矩陣的公式做超時了。換個思路，這題跟上一題1506有關系，先以每層為底算出每個元素能到達的最大的高度，然後就跟1506一樣了。這裡

這個實驗需要以下的代碼： class Test{public: Test(){cout << "Test" &l

題意：有一個NxN的棋盤，你需要在上面放N個車，它們互相之間不能攻擊到，並且每個車只能放在指定的矩形范圍裡面。 思路：首先車之間不能互相攻擊，那麼每行

DescriptionSeiji Hayashi had been a professor of the Nisshinkan Samurai School i

Given two integers n and k, return all possible combinations of k numbers out of

題意：給1*n的格子，輪流在上面叉叉，最先畫得3個連續叉叉的贏，問先手必勝還是必敗。分析：求狀態的grundy值（也就是sg值），具體怎麼求詳見代碼，為什麼這麼

  package test;import java.io.File;import java.io.FileInputStream;impo

nvert a binary tree. 4/ \2 7/ \ / \1 3 6 9to4/ \7 2/ \ / \9 6 3 1Trivia:This pro

題意：有T組測試數據，每組數據的N表示有N個城市，接下來的N行裡每行給出每個城市的坐標(0<=x,y<=100000

編寫分析器有兩種方法，一種是通過DFA對單詞進行識別，二是通過直接編寫程序進行識別。本程序采用DFA對單詞進行識別。DFA的實現方法，大概思想和書上一致，在程序

Given a m x n grid filled with non-negative numbers, find a path from top left t

題目A message containing letters from A-Z is being encoded to numbers using the fo

樹鏈剖分第一題QAQ，紀念下  #pragma comment(linker, "/STACK:102400000,1024000

Recently, researchers on Mars have discovered N powerful atoms. All of them are

Going HomeTime Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (J

Problem Description You are given a tree, it’s root is p, and the node is

DescriptionFarmer John's cows have discovered that the clover growing along