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原创题解

NOIP2015模拟试题题解 chongjg的求助【题目大意】求nn以内所有的(m,k)(m,k)，使得下式成立： m3=(k+1)2+(k+2)2+...+(k+m)2m^3=(k+1)^2+(k+2)^2+...+(k+m)^2 【算法一】 1~n 一个一个数枚举，期望得分30分【算法二】如果有O(n)的做法，则期望得分50分【算法三】各种推一推。。。设

2015-10-30 13:06:30 493

原创阶乘数最右边一个非零数字：通用解法

给出正整数n（可能有前导0），请求出n!最右非零的数位的值。

2015-03-17 13:50:02 5963

转载欢迎使用优快云-markdown编辑器

欢迎使用Markdown编辑器写博客本Markdown编辑器使用StackEdit修改而来，用它写博客，将会带来全新的体验哦： Markdown和扩展Markdown简洁的语法代码块高亮图片链接和图片上传 LaTex数学公式 UML序列图和流程图离线写博客导入导出Markdown文件丰富的快捷键快捷键加粗 Ctrl + B 斜体 Ctrl + I 引用 Ctrl

2015-03-17 12:58:30 506

原创 sgu139

题目： 139. Help Needed! time limit per test: 0.25 sec. memory limit per test: 4096 KB Little Johnny likes puzzles a lot! Just a few days ago, he found out about the 'traditional' 4x

2015-01-20 13:13:59 686

原创 sgu128

题目： 128. Snake time limit per test: 0.25 sec. memory limit per test: 4096 KB There are N points given by their coordinates on a plane. All coordinates (xi,yi) are integers in a ra

2015-01-06 22:40:31 519

原创 sgu121

题目： 121. Bridges painting time limit per test: 0.25 sec. memory limit per test: 4096 KB New Berland consists of N (1£ N£ 100) islands, some of them are connected by bridges. There

2014-12-12 22:33:37 500

原创 sgu144

题目： 144. Meeting time limit per test: 0.25 sec. memory limit per test: 4096 KB Two of the three members of the winning team of one of the ACM regional contests are going to meet i

2014-12-12 12:58:02 555

原创 sgu124

题目： 124. Broken line time limit per test: 0.25 sec. memory limit per test: 4096 KB There is a closed broken line on a plane with sides parallel to coordinate axes, without self-cr

2014-12-11 21:14:33 563

原创 sgu120

题目 120. Archipelagotime limit per test: 0.25 sec. memory limit per test: 4096 KBArchipelago Ber-Islands consists of N islands that are vertices of equiangular and equilateral N-gon. Islands are clock

2014-12-09 22:08:39 519

原创 sgu119

题目： 119. Magic Pairs time limit per test: 0.25 sec. memory limit per test: 4096 KB “Prove that for any integer X and Y if 5X+4Y is divided by 23 than 3X+7Y is divided by 23 too.”

2014-12-09 22:04:53 603

原创 sgu111高精度开方

题目 111. Very simple problem time limit per test: 0.25 sec. memory limit per test: 4096 KB You are given natural number X. Find such maximum integer number that it square is not gr

2014-12-07 19:41:03 600

原创 sgu110计算几何

题意： 110. Dungeon time limit per test: 0.25 sec. memory limit per test: 4096 KB The mission of space explorers found on planet M the vast dungeon. One of the dungeon halls is fill wi

2014-12-07 11:46:19 660

原创 sgu100

100 读入两个整数A和B，输出它们的和。水题 #include using namespace std; int main() {int a, b; cin >> a >> b; cout << a + b << endl; }

2014-11-26 19:19:40 523

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