[BZOJ3992] [SDOI2015] sequence statistics”
Description
Small C has a set of S whose elements are all non negative integers less than M. He programmed a sequence generator to generate a N-length sequence in which each number belongs to the set S. Small C uses this generator to generate many such sequences. But little C has a problem that needs you.Help: Given the integer x, find how many different sequences of numbers can be generated that satisfy the value of the product mod M of all the numbers in the sequence equal to X. Small C holds that two sequences {Ai} and {Bi} are different if ...
7 8 9 The three column is time (the default is modification time).
modify Modify time -mtime modify file content
change Change time -ctime file properties change
access Access time -atime access file content
Format display time attribute:
[root@redhat~]# ls -l –time-style=long-iso /redhat
View the file’s time attribute:
[root@redhat~]# stat /redhat
The tenth column is not in the file inode, but in the block of the higher directory.
[BZOJ3771] Triple
Description
Let’s tell a sad story. Once upon a time, there was a poor woodcutter cutting firewood beside the river. Then a water God appeared in the river, took his axe and said, “Is this your axe?” The woodcutter looked at him, “yes, yes!” The water God threw the axe aside, and picked up one thing and asked, “this axe,Is it yours? ” The woodcutter could not see clearly, but he was afraid that he was really his axe, so he replied, “yes, yes!” The God of water threw aside the thing on his hand, took the third thing and as...
HDU3336Count the string
Problem Description
It is well known that AekdyCoin is good at string problems as well as number theory problems. When given a string s, we can write down all the non-empty prefixes of this string. For example:s: “abab”The
prefixes are: “a”, “ab”, “aba”, “abab”For each prefix, we can count the
times it matches in s. So we can see that prefix “a” matches twice, “ab” matches
twice too, “aba” matches once, and “abab” matches once. Now you are asked to
calculate the ...
The distance from one point to another is equal to the number of edges.
First select a point and connect it with other points to find the minimum distance.
Input sample #1:
4 5
1 2 1
1 3 3
1 4 1
2 3 4
3 4 1
Output sample #1:
4
Input sample #2:
4 5
1 2 1
1 3 3
1 4 1
2 3 4
3 4 2
Output sample #2:
5
Explain
Of course, it’s blasting.
#include<cstdio>
#include<iostream>
#include<cstring>
#include<cctype>
#include<algorithm>
using namespace std;
#define int long long
int n;
int m;
int f[20][20];
int g[20]...
A little bit.
Thought: note that the divisor may be 0, otherwise it will cause floating-point error.
Code:
#include <iostream>
#include <string>
using namespace std;
int main()
{
int n;
string str;
cin>>n;
while(n--){
cin>>str;
string s1=str.substr(0,str.size()/2);
string s2=str.substr(str.size()/2,str.size()/2);
int a=stoi(s1),b=stoi(s2),val=stoi(str);
if(b!=0 && val%(a*b)==0) cout<<"Yes\n";
else cout<<"No\n";
}
}
Template engine, the word “engine” has always made me feel tall and I want to comb it today.
To illustrate its usefulness, click the button to send an Ajax request for background server data, and then display the data in an empty table tag on the Web page
Node Small server implemented
var http = require('http')
var server = http.createServer()
server.on('request', function (req, res) {
res.setHeader('Access-Control-Allow-Origin','*') //Cross domain resource sharing allows any source request.
//jsonArray to simulate database data
var data = `[{
"name": "MicKo...
I believe that friends with greater project development experience have encountered memory overflow problems, so how do you analyze such problems? Have you ever met HardFault_Handler and analyzed map?
First, let’s talk about the configuration of map in MDK-ARM. In fact, in MDK-ARM, we can output the corresponding (we need) content in the map file according to our own circumstances (different configurations). By default, all information is output.
Project -> Options for Target -> Listing：You will see the following configuration interface:
See the above picture, I bel...
