Bob is attending a chess competition. Now the competition is in the knockout phase. There are 2^r2r players now, and they will play over rr rounds. In each knockout round, the remaining players would be divided into pairs, and the winner of each pair…
Consider n given non-empty strings denoted by s1 , s2 , · · · , sn . Now for each of them, you need to select a corresponding suffix, denoted by suf1, suf2, · · · , sufn. For each string si, the suffix sufi is a non-empty substring whose right endpoi…
Lusrica designs a mosquito coil in a board with n × n grids. The mosquito coil is a series of consecutive grids, each two neighboring grids of which share a common border. If two grids in the mosquito coil are not consecutive, they do not share any b…
题目链接 problem description 5 friends play LOL together . Every one should BAN one character and PICK one character . The enemy should BAN 55 characters and PICK 55 characters . All these 2020 heroes must be different . Every one can BAN any heroes by h…
题目链接 http://acm.hdu.edu.cn/showproblem.php?pid=4803 Problem Description Jenny is a warehouse keeper. He writes down the entry records everyday. The record is shown on a screen, as follow:There are only two buttons on the screen. Pressing the button i…
杭州现场赛的题.BFS+DFS #include <iostream> #include<cstdio> #include<cstring> #define inf 9999999 using namespace std; char mp[105][105]; int sq[5][5]; int step[4][2]={{0,1},{1,0},{0,-1},{-1,0}}; struct pos { int x,y; }; int n,m,prn,x,y,tmp,ans…
