Problem Description Password security is a tricky thing. Users prefer simple passwords that are easy to remember (like buddy), but such passwords are often insecure. Some sites use random computer-generated passwords (like xvtpzyo), but users have a…
2014多校第五题,当时题面上的10^5写成105,我们大家都wa了几发,改正后我和一血就差几秒…不能忍 题目:http://acm.hdu.edu.cn/showproblem.php?pid=4891 The Great Pan Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 966 Accepted Submission(s…
B. Ohana Cleans Up Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/554/problem/B Description Ohana Matsumae is trying to clean a room, which is divided up into an n by n grid of squares. Each square is initially either clea…
A. Kyoya and Photobooks Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/554/problem/A Description Kyoya Ootori is selling photobooks of the Ouran High School Host Club. He has 26 photos, labeled "a" to "z", a…
A. Petya and Strings 点击打开题目 time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Little Petya loves presents. His mum bought him two strings of the same size for his birthday. The strings consi…
time limit per test: 1 second memory limit per test: 256 megabytes input: standard input output: standard output Given a string sss of length nnn and integer k (1≤k≤n)k\ (1≤k≤n)k (1≤k≤n). The string sss has a level xxx, if xxx is largest non-negative…
给出一个字符串,问再加入一个字母,最多能形成多少种字符串 inputaoutput51inputhioutput76 # include <iostream> # include <cstdio> # include <cstring> # include <algorithm> # include <cmath> # define LL long long using namespace std ; int main () { //freope…
描述 http://train.usaco.org/usacoprob2?a=y0SKxY0Kc2q&S=ride 给出两个由大写字母组成,长度不大于$6$的字符串. 将字符串中的各字母的字典序数相乘,最后对$47$取模,比较两个字符串的结果是否相同. Your Ride Is Here It is a well-known fact that behind every good comet is a UFO. These UFOs often come to collect loyal sup…
To and Fro 点我 Problem Description Mo and Larry have devised a way of encrypting messages. They first decide secretly on the number of columns and write the message (letters only) down the columns, padding with extra random letters so as to make a rec…
DNA Sorting Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 80832 Accepted: 32533 Description One measure of ``unsortedness'' in a sequence is the number of pairs of entries that are out of order with respect to each other. For instanc…
排序 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 30009 Accepted Submission(s): 8326 Problem Description 输入一行数字,如果我们把这行数字中的‘5’都看成空格,那么就得到一行用空格分割的若干非负整数(可能有些整数以‘0’开头,这些头部的‘0’应该被忽略掉,除非这个整数就是由若…
Problem 1057: Hkhv的水题之二 Time Limits: 1000 MS Memory Limits: 65536 KB 64-bit interger IO format: %lld Java class name: Main Description 杨神喜欢字符串,于是他写程序随机生成了n个长度不大于100的字符串.但是他认为这里面有一些字符串是一样的.比如,abcd,bcda,cdab,dabc这4个他认为就是一样的. 因此,杨神想知道,这些随机生成的字符串…
LSS Time Limit: 20000/10000 MS (Java/Others) Memory Limit: 128000/64000 KB (Java/Others) SubmitStatistic Next Problem Problem Description Time flies, four years passed, colleage is over. When I am about to leave, a xuemei ask me an ACM problem, but…
n a^o7 ! Time Limit: 1000MS Memory limit: 65536K 题目描述 All brave and intelligent fighters, next you will step into a distinctive battleground which is full of sweet and happiness. If you want to win the battle, you must do warm-up according to my inst…
