Gauss Fibonacci Time Limit: 3000/1000 MS (Java/Others)     Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 27    Accepted Submission(s): 5 Problem Description Without expecting, Angel replied quickly.She says: "I'v heard that you'r a ve…

HDU 1588 Gauss Fibonacci(矩阵高速幂+二分等比序列求和) ACM 题目地址:HDU 1588 Gauss Fibonacci 题意:  g(i)=k*i+b;i为变量.  给出k,b,n,M,问( f(g(0)) + f(g(1)) + ... + f(g(n)) ) % M的值. 分析:  把斐波那契的矩阵带进去,会发现这个是个等比序列. 推倒: S(g(i)) = F(b) + F(b+k) + F(b+2k) + .... + F(b+nk) // 设 A = {1…

HDU.1575 Tr A ( 矩阵快速幂) 点我挑战题目 题意分析 直接求矩阵A^K的结果,然后计算正对角线,即左上到右下对角线的和,结果模9973后输出即可. 由于此题矩阵直接给出的,题目比较裸. 代码总览 #include <iostream> #include <cstdio> #include <algorithm> #include <cstring> #include <sstream> #include <set> #…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2842 题目大意:棒子上套环.第i个环能拿下的条件是:第i-1个环在棒子上,前i-2个环不在棒子上.每个环可以取下或放上,cost=1.求最小cost.MOD 200907. 解题思路: 递推公式 题目意思非常无聊,感觉是YY的. 设$dp[i]$为取第i个环时的总cost. $dp[1]=1$,$dp[2]=2$,前两个环取下是没有条件要求的. 从i=3开始,由于条件对最后的环限制最大,所以从最后一…

Problem Description Queues and Priority Queues are data structures which are known to most computer scientists. The Queue occurs often in our daily life. There are many people lined up at the lunch time. Now we define that ‘f’ , then they are ff, mm,…

题意:给你一个n,输出Fibonacci (n)%10000的结果 思路:裸矩阵快速幂乘,直接套模板 代码: #include <cstdio> #include <cstring> #include <iostream> using namespace std; typedef long long ll; ,M=,P=; ; struct Matrix { ll m[N][N]; }; Matrix A={,, ,}; Matrix I={,, ,}; Matrix…

Description In the Fibonacci integer sequence, F0 = 0, F1 = 1, and Fn = Fn − 1 + Fn − 2 for n ≥ 2. For example, the first ten terms of the Fibonacci sequence are: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, … An alternative formula for the Fibonacci sequence is…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5950 Farmer John likes to play mathematics games with his N cows. Recently, they are attracted by recursive sequences. In each turn, the cows would stand in a line, while John writes two positive numbers…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4767 题意:求集合{1, 2, 3, ..., n}有多少种划分情况bell[n],最后结果bell[n] mod 95041567. 分析:首先了解三个概念:贝尔数   第二类斯特灵数   中国剩余定理 贝尔数是指基数为n的集合的划分方法的数目. 贝尔数适合递推公式: 每个贝尔数都是"第二类Stirling数"的和 贝尔数满足两个公式:(p为质数)             1) B[n+…

题目传送门:http://acm.hdu.edu.cn/showproblem.php?pid=6470 Count Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 301    Accepted Submission(s): 127 Problem Description Farmer John有n头奶牛.某天奶牛想要数一数有多少头奶牛…