B. Infinite Maze time limit per test  2 seconds memory limit per test  256 megabytes input standard input output  standard output We've got a rectangular n × m-cell maze. Each cell is either passable, or is a wall (impassable). A little boy found the…

D - Infinite Maze We've got a rectangular n × m-cell maze. Each cell is either passable, or is a wall (impassable). A little boy found the maze and cyclically tiled a plane with it so that the plane became an infinite maze. Now on this plane cell (x,…

197D - Infinite Maze 思路:bfs,如果一个点被搜到第二次,那么就是符合要求的. 用vis[i][j].x,vis[i][j].y表示i,j(i,j是取模过后的值)这个点第一次被搜到的位置,用vis[(next.x%n+n)%n][(next.y%m+m)%m]标记,因为位置可以为负数(绝对值很大的负数). 代码: #include<bits/stdc++.h> using namespace std; ; const int INF=0x3f3f3f3f; char Ma…

We've got a rectangular n × m-cell maze. Each cell is either passable, or is a wall (impassable). A little boy found the maze and cyclically tiled a plane with it so that the plane became an infinite maze. Now on this plane cell (x, y) is a wall if a…

Infinite Maze time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output We've got a rectangular n × m-cell maze. Each cell is either passable, or is a wall (impassable). A little boy found the maze…

从起点开始走,对于可以走到的位置,都必定能从这个位置回到起点.这样,对地图进行搜索,当地图中的某一个被访问了两次,就能说明这个地图可以从起点走到无穷远. 搜索的坐标(x,y),x的绝对值可能大于n,的绝对值可能大于m,(x,y)对应在基础地图的位置为rx=(nx%n+n)%n,ry=(ny%m+m)%m We've got a rectangular n × m-cell maze. Each cell is either passable, or is a wall (impassable).…

Dancing Lessons Time Limit: 5000ms Memory Limit: 262144KB This problem will be judged on CodeForces. Original ID: 45C64-bit integer IO format: %I64d      Java class name: (Any)   There are n people taking dancing lessons. Every person is characterize…

Double Profiles Time Limit: 3000ms Memory Limit: 262144KB This problem will be judged on CodeForces. Original ID: 154C64-bit integer IO format: %I64d      Java class name: (Any)   You have been offered a job in a company developing a large social net…

Hometask Time Limit: 2000ms Memory Limit: 262144KB This problem will be judged on CodeForces. Original ID: 154A64-bit integer IO format: %I64d      Java class name: (Any)   Sergey attends lessons of the N-ish language. Each lesson he receives a homet…

An interesting mobile game Time Limit: 1000ms Memory Limit: 32768KB This problem will be judged on HDU. Original ID: 329564-bit integer IO format: %I64d      Java class name: Main   XQ,one of the three Sailormoon girls,is usually playing mobile games…