If p is the perimeter of a right angle triangle with integral length sides, {a,b,c}, there are exactly three solutions for p = 120. {20,48,52}, {24,45,51}, {30,40,50} For which value of p  1000, is the number of solutions maximised? 题目大意: 如果p是一个直角三角形…

If p is the perimeter of a right angle triangle with integral length sides, {a,b,c}, there are exactly three solutions for p = 120. {20,48,52}, {24,45,51}, {30,40,50} For which value of p ≤ 1000, is the number of solutions maximised? #include <iostre…

题意:若三边长 { a , b , c } 均为整数的直角三角形周长为 p ,当 p = 120 时,恰好存在三个不同的解:{ 20 , 48 , 52 } , { 24 , 45 , 51 } , { 30 , 40 , 50 } 在所有的p ≤ 1000中,p取何值时有解的数目最多? 思路:可以构建素勾股数,每构建成功一组素勾股数就用其生成其他勾股数,最后扫描一遍取最大值即可. 素勾股数性质: /************************************************…

Problem D: Integer InquiryTime Limit: 1 Sec Memory Limit: 128 MBSubmit: 41 Solved: 12[Submit][Status][Web Board]DescriptionOne of the first users of BIT’s new supercomputer was Chip Diller. He extended his exploration of powers of 3 to go from 0 to 3…

题目链接 原题: It turns out that 12 cm is the smallest length of wire that can be bent to form an integer sided right angle triangle in exactly one way, but there are many more examples. 12 cm: (3,4,5)24 cm: (6,8,10)30 cm: (5,12,13)36 cm: (9,12,15)40 cm: (…

题目链接 思路: 勾股数组,又称毕达格拉斯三元组. 公式:a = s*t b = (s^2 - t^2) / 2 c = (s^2 + t^2) / 2 s > t >=1 且为互质的奇数 代码: #pragma GCC optimize(2) #pragma GCC optimize(3) #pragma GCC optimize(4) #include<bits/stdc++.h> using namespace std; #define y1 y11 #define fi f…

华电北风吹 天津大学认知计算与应用重点实验室 完毕日期:2015/7/30 Integer right triangles Problem 39 If p is the perimeter of a right angle triangle with integral length sides, {a,b,c}, there are exactly three solutions for p = 120. {20,48,52}, {24,45,51}, {30,40,50} For which…

9. Palindrome Number Determine whether an integer is a palindrome. Do this without extra space. click to show spoilers. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string, note the res…

Reverse Integer Reverse digits of an integer. Example1: x =  123, return  321 Example2: x = -123, return -321 click to show spoilers. Have you thought about this? Here are some good questions to ask before coding. Bonus points for you if you have alr…

看了半天...发现就是个背包...然后就不打算敲了. 看了一眼forum..顿时吓傻..其他人用了gcd啊什么的各种奇怪的东西..然后还是敲了个背包结果就AC了= =既然写了代码就扔上来吧... ------------------------------------------------------------------------ #include<cstdio> #include<cstring> #include<algorithm>   using nam…