题目链接: https://codeforces.com/contest/707/problem/C 题目: 题意: 告诉你直角三角形的一条边,要你输出另外两条边. 思路: 我们容易发现除2外的所有素数x作为直角边,那么另外两条边的长度一定为(x * x - 1)/2和(x * x + 1)/2,因此对于每个数我们只需要找到n的最小素因子(除2外)即可,需要额外处理一下2的幂次. 代码实现如下: #include <set> #include <map> #include <…
Pythagorean Triples 题目链接: http://codeforces.com/contest/707/problem/C Description Katya studies in a fifth grade. Recently her class studied right triangles and the Pythagorean theorem. It appeared, that there are triples of positive integers such th…
直达–>Codeforces Round #368 (Div. 2) A Brain’s Photos 给你一个NxM的矩阵,一个字母代表一种颜色,如果有”C”,”M”,”Y”三种中任意一种就输出”#Color”,如果只有”G”,”B”,”W”就输出”#Black&White”. #include <cstdio> #include <cstring> using namespace std; const int maxn = 200; const int INF =…
Bakery 题目链接: http://codeforces.com/contest/707/problem/B Description Masha wants to open her own bakery and bake muffins in one of the n cities numbered from 1 to n. There are m bidirectional roads, each of whose connects some pair of cities. To bake…
Brain's Photos 题目链接: http://codeforces.com/contest/707/problem/A Description Small, but very brave, mouse Brain was not accepted to summer school of young villains. He was upset and decided to postpone his plans of taking over the world, but to becom…
C. Pythagorean Triples 题目连接: http://www.codeforces.com/contest/707/problem/C Description Katya studies in a fifth grade. Recently her class studied right triangles and the Pythagorean theorem. It appeared, that there are triples of positive integers…
Description Katya studies in a fifth grade. Recently her class studied right triangles and the Pythagorean theorem. It appeared, that there are triples of positive integers such that you can construct a right triangle with segments of lengths corresp…
A. Brain's Photos time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Small, but very brave, mouse Brain was not accepted to summer school of young villains. He was upset and decided to postpo…
A. Brain's Photos time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Small, but very brave, mouse Brain was not accepted to summer school of young villains. He was upset and decided to postpo…
Persistent Bookcase Problem Description: Recently in school Alina has learned what are the persistent data structures: they are data structures that always preserves the previous version of itself and access to it when it is modified. After reaching…