#include <stdio.h> #include <stdlib.h> #include <iostream> #include <string.h> using namespace std; int num[4][10],n; int vis[1100],exa[10]; void dfs(int ceng,int s) { vis[s]=1; if(ceng>=n) return; for(int i=1;i<=n;i++) { if(…

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <iostream> using namespace std; char s[10][10]; int panduan(int row,int cew) { for(int i=0;i<4;i++) { if(s[row][i]==s[row][cew]&&i!=cew) return 0; } for…

B. Cubes for Masha time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Absent-minded Masha got set of n cubes for her birthday. At each of 6 faces of each cube, there is exactly one digit from…

CSU-ACM寒假集训选拔-入门题 仅选择部分有价值的题 J(2165): 时间旅行 Description 假设 Bobo 位于时间轴(数轴)上 t0 点,他要使用时间机器回到区间 (0, h] 中. 当 Bobo 位于时间轴上 t 点,同时时间机器有 c 单位燃料时,他可以选择一个满足 \(\lceil\frac{x}{h}\rceil\leq c\) 的非负整数 x, 那么时间机器会在 [0, x]中随机整数 y,使 Bobo 回到 (t − y) 点,同时消耗 y 单位燃料. (其中 ⌈…

简单搜索 1.DFS UVA 548 树 1.可以用数组方式实现二叉树,在申请结点时仍用“动态化静态”的思想,写newnode函数 2.给定二叉树的中序遍历和后序遍历,可以构造出这棵二叉树,方法是根据后序遍历找到根,然后在中序遍历中找到树根,从而找出左右子树的结点列表然后递归 构造左右子树 3.注意这里输入的模板,用stringstream会方便 #include<iostream> #include<string> #include<cmath> #include&l…

day1:学习seach和回溯,初步了解. day2:深度优化搜索 T1 洛谷P157:https://www.luogu.com.cn/problem/P1157 题目描述 排列与组合是常用的数学方法,其中组合就是从nnn个元素中抽出rrr个元素(不分顺序且r≤n)r \le n)r≤n),我们可以简单地将nnn个元素理解为自然数1,2,-,n1,2,-,n1,2,-,n,从中任取rrr个数. 现要求你输出所有组合. 例如n=5,r=3n=5,r=3n=5,r=3,所有组合为: 123,124…

A.解救小Q BFS.每次到达一个状态时看是否是在传送阵的一点上,是则传送到另一点即可. 代码: #include <iostream> #include <cstdio> #include <cstring> #include <cmath> #include <algorithm> #include <queue> using namespace std; #define NA 100007 ][]; struct status…

A tournament is a directed graph without self-loops in which every pair of vertexes is connected by exactly one directed edge. That is, for any two vertexes u and v (u ≠ v) exists either an edge going from u to v, or an edge from v to u. You are give…

Little Tom loves playing games. One day he downloads a little computer game called 'Bloxorz' which makes him excited. It's a game about rolling a box to a specific position on a special plane. Precisely, the plane, which is composed of several unit c…

K - 迷宫问题 Crawling in process... Crawling failed Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Description 定义一个二维数组: int maze[5][5] = { 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 1…