咸鱼の小窝

Description：In mathematics, the Pythagorean theorem — is a relation in Euclidean geometry among the three sides of a right-angled triangle. In terms of areas, it states:In any right-angled triang

Description:Byteman has a collection of N squares with side 1. How many different rectangles can he form using these squares?Two rectangles are considered different if none of them can be rotate

题目链接：点击打开链接中文翻译见紫书182页一开始暴力想到了10个for循环，接着看了看书，5个就够了，写了会感觉好low啊。写完后有bug，debug时感觉好熟悉，突然想到了第二章的习题2-6，果断把5个for循环删掉，改为用一个for从1234到49385循环（abcde / fghij= N， N最小为2，只要循环到98765/2+1就行 ）。这里判断数字是否重复用到了字符数组，

题目链接：点击打开链接公式挺好推的，注意一下枚举的范围即可详见紫书183页AC代码：#include #include #include #include #include using namespace std;int a[10005][5];int main(){ int k, ans, tem, i; while(~scanf("%d",&k)

题目链接：UVa 201 SquaresDescription： A children’s board game consists of a square array of dots that contains lines connecting some of the pairs of adjacent dots. One part of the game requires that the

1143 - 计算几何你瞎暴力Time Limit：5s Memory Limit：256MByteSubmissions：1828Solved：365DESCRIPTION今天HHHH考完了期末考试,他在教学楼里闲逛,他看着教学楼里一间间的教室,于是开始思考:如果从一个坐标为 (x1,y1,z1)(x1,y1,z1)的教室走到(x2,y

1147.Pythagoras's RevengeTime Limit: 1000 MS    Memory Limit: 32768 KBTotal Submission(s): 4    Accepted Submission(s): 2DescriptionThe famous Pythagorean theorem state