hdu 3221 Brute-force Algorithm(高速幂取模,矩阵高速幂求fib) http://acm.hdu.edu.cn/showproblem.php?pid=3221 一晚上搞出来这么一道题。。Mark。 给出这么一个程序。问funny函数调用了多少次。 我们定义数组为所求:f[1] = a,f[2] = b, f[3] = f[2]*f[3]...f[n] = f[n-1]*f[n-2...
利用矩阵高速幂求fib[n]%phi[p]。 #include<stdio.h>#include<iostream>#include#include<set>#include<list>#include<stack>#include<vector>#include<math.h>#include<string.h>#include<queue>#include<string>#include<stdlib.h>#include<algorithm>#defineLLlonglong#define_LL__int64#defineeps1e-12#defi...
HDU 3221 Brute-force Algorithm 题意:问funny被调用了多少次,结果ModP,P不一定为质数。首先很容易发现递推公式fn=fn-1*fn-2;写出前几项a,b,a*b,a*b^2,a^2*b^3,a^3*b^5;易发现a,b的指数为斐波那契数列。但是当N大一点时,斐波那契数列便变得非常大。那么此时得用欧拉定理降幂。特别要主要使用条件,...
h> #include <algorithm> #define LL long long #define _LL __int64 #define eps 1e-12 #define PI acos(-1.0) #define C 240 #define S 20 using namespace std; const int maxn = 110; struct matrix { LL mat[3][3]; void init() { memset(mat,0,sizeof(mat)); for(int i = 0; ...
Brute-force Algorithm(矩阵快速幂&欧拉降幂) 题意 a , b , a b , a b 2 … a,b,ab,ab^2\dotsa,b,ab,ab2…序列的a , b a,ba,b指数是斐波那契形式,求在模p pp意义下的第n nn项。 思路 考虑先用矩阵快速幂预处理出a , b a,ba,b的指数,因为指数非常大,考虑欧拉降幂,只需要矩阵乘法中...
11 Motif Finding Brute-Force Algorithm When is the Problem Solvable ? Motif Finding AlgorithmsDieterich, C
#include <iostream> #include <algorithm> #include <cstdio> #include <cstring> #include <queue> using namespace std; const int N=1e5+5; struct Node { int l,r; int x; }a[N]; queue<int>Q; int main() { int T; cin>>T; while(T--) { int n; scanf("%d",&n); for(int i...
参照教材的“串的简单模式匹配Brute-Force算法”,假设主串S=‘aaabbbababaabb’,模式串T=‘abaa’,用串匹配算法从主串的第6个字符开始模式匹配,需要做___趟(次)匹配,方能找到匹配串。的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职
Algorithm-based encryption methods known as hash functions produce long, randomized passwords that can be used by cracking tools to guess their outputs. Dictionary botsThrough dictionary attacks, brute force tools can brush past single-word passwords in the blink of an eye. Common brute force ...
3-matroid intersectionNP-hard problemparameterized complexitybrute force algorithmMatroid theory gives us powerful techniques for understanding combinatorial ... D Marx - 《Theoretical Computer Science》 被引量: 115发表: 2006年 [IEEE 2015 IEEE 56th Annual Symposium on Foundations of Computer Science (FOC...