题目地址:http://codeforces.com/contest/699/problem/B 题目大意: 一个矩阵,内容由‘.’和‘*’组成(‘.’ 空,‘*’ 代表墙),墙分布在不同位置,现找出一个位置放置 炸弹,炸弹能炸当前位置的一整行和一整列,如果炸弹的位置可以将所有的墙都炸掉,则输出 “YES” 并输出该位置,如果不存在这样一个位置,这输出“NO”.[炸弹可以放在空地或者墙上] 解题思路: 1. 对每行每列的墙进行统计,如果该位置为墙,则该行的墙数++同时该列的墙++,统计出所有墙的…

题目链接: http://codeforces.com/problemset/problem/699/B 题目大意: N*M的图,*代表墙.代表空地.问能否在任意位置(可以是墙上)放一枚炸弹(能炸所在行和列),把所有的墙都炸掉.输出答案(不唯一). 题目思路: [模拟] N2预处理出每一行能炸多少墙,每一列能炸多少墙.再N2枚举放炸弹的位置看能炸掉的墙数目是否等于总数.注意如果炸弹位置上有墙要-1. // //by coolxxx ////<bits/stdc++.h> #include<…

B. One Bomb time limit per test1 second memory limit per test256 megabytes Problem Description You are given a description of a depot. It is a rectangular checkered field of n × m size. Each cell in a field can be empty (".") or it can be occupi…

传送门:http://codeforces.com/contest/895/problem/B B. XK Segments time limit per test1 second memory limit per test256 megabytes Problem Description While Vasya finished eating his piece of pizza, the lesson has already started. For being late for the l…

传送门:http://codeforces.com/contest/895/problem/A A. Pizza Separation time limit per test1 second memory limit per test256 megabytes Problem Description Students Vasya and Petya are studying at the BSU (Byteland State University). At one of the breaks…

A- Irrational problem p Time Limit: 2000MS Memory Limit: 262144K 64bit IO Format: %I64d& %I64 Description Little Petya was given this problem for homework: You are given function Irrational problem (here Irrational problem represents the operationof…

Bag of mice time limit per test 2 seconds memory limit per test 256 megabytes Program Description The dragon and the princess are arguing about what to do on the New Year's Eve. The dragon suggests flying to the mountains to watch fairies dancing in…

D. Dog Show time limit per test2 seconds memory limit per test256 megabytes Problem Description A new dog show on TV is starting next week. On the show dogs are required to demonstrate bottomless stomach, strategic thinking and self-preservation inst…

著名的CSAPP实验:二进制炸弹 就是通过gdb和反汇编猜测程序意图,共有6关和一个隐藏关卡 只有输入正确的字符串才能过关,否则会程序会bomb终止运行 隐藏关卡需要输入特定字符串方会开启 实验材料下载地址:http://csapp.cs.cmu.edu/2e/labs.html 下面通关解法: 反汇编: objdump -d bomb > bomb_assembly_32.S Phase 1: 打开bomb_assembly_32.S,定位到<phase_1>函数,可以看到以下代码:…

针对程序的输出可以看见 CodeForces :当输入.输出超过一定字符,会隐藏内容 所以:分若干个程序进行输入数据的获取 1. ;i<=q;i++) { scanf("%ld%ld%ld",&info[i].x,&info[i].y,&info[i].t); && m==) { && i<=) printf("%ld %ld %ld\n",info[i].x,info[i].y,info[i].t…