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Puzzle: Square Jam(递归)

#include <bits/stdc++.h> using namespace std; typedef long long ll; const ll N =1e6+5; ll cnt=0; struct node { ll x,y,z; }; node s[N]; ll ...

C++

2023-08-14

0 113

快速幂

#include<bits/stdc++.h> using namespace std; typedef long long ll; ll ksm(ll a,ll b) { ll ans=1; while(b) { if(b%2==1)//!b&...

C++

2023-08-07

0 28

组合数(%mod)

详见:https://oi-wiki.org/math/number-theory/linear-equation/ ll f[N],g[N],pw2[N]; ll q_pow(ll x,ll y)//快速幂 { ll ans=1; while(y) { i...

C++

2023-08-03

0 28

数据爬取,输出,绘制图标

用到的软件：Pycharm,Qtdesigner,SQLiteStudio draw.py(绘制图表): import sqlite3 import matplotlib.pyplot as plt import numpy as np class draw(): def __init__...

Python3

2023-08-02

0 43

01和完全背包问题

//01背包: 1.二维: #include<bits/stdc++.h> using namespace std; const int MAXN = 1005; int v[MAXN]; // 体积 int w[MAXN]; // 价值 int f[MAXN][MA...

C++

2023-08-02

0 28

欧拉筛

const ll N = 4e7; ll a[N]; ll b[N]; ll cnt=0; int ols(ll n) //欧拉筛 { a[0]=1; a[1]=1; ll sum=0; ll i,j; for(i=2;i<=n;i++) { if(a[...

C++

2023-07-30

0 18

排列序列

c++: #include <bits/stdc++.h> using namespace std; typedef long long ll; int main() { ll n,k,a[10]; cin>>n>>k; for(ll i=1;i<=...

C++ Python3

2023-07-29

1 37

Election of the King

#include <bits/stdc++.h> using namespace std; const int N=1e6+5; int a[N],s[N]; int check(int m,int l,int r) { if(m-l<=r-m) return 1; ...

C++

2023-07-29

0 32

we are the lights

#include <bits/stdc++.h> using namespace std; typedef long long ll; const ll N=1e6+5; struct node{ ll x,y,z; };// x记录行/列， y记录第几行/第几列, z记录开灯/关灯 ...

C++

2023-07-28

0 30