题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4686 题意: 思路: #include <iostream>#include <cstdio>#include <string.h>#include <algorithm>#include <cmath>#include <vector>#include <queue>#include <set>#include…

链接:http://acm.hdu.edu.cn/showproblem.php?pid=4686 题意: 其中a0 = A0ai = ai-1*AX+AYb0 = B0bi = bi-1*BX+BY 最后的结果mod 1,000,000,007 n<=10^18. 分析:ai*bi=(ai-1 *ax+ay)*(bi-1 *bx+by) =(ai-1 * bi-1 *ax*bx)+(ai-1 *ax*by)+(bi-1 *bx*ay)+(ay*by) 设p=ax*bx,  q=ax*by, …

http://acm.hdu.edu.cn/showproblem.php?pid=4686 当看到n为小于64位整数的数字时,就应该有个感觉,acm范畴内这应该是道矩阵快速幂 Ai,Bi的递推式题目已经给出, Ai*Bi=Ax*Bx*(Ai-1*Bi-1)+Ax*By*Ai-1+Bx*Ay*Bi-1+Ay*By AoD(n)=AoD(n-1)+AiBi 构造向量I{AoD(i-1),Ai*Bi,Ai,Bi,1} 初始向量为I0={0,A0*B0,A0,B0,1} 构造矩阵A{ 1,0,0,0,…

题目链接 再水一发,构造啊,初始化啊...wa很多次啊.. #include <cstring> #include <cstdio> #include <string> #include <iostream> #include <algorithm> #include <vector> #include <queue> using namespace std; #define MOD 1000000007 #define…

Arc of Dream Time Limit: 2000/2000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 419    Accepted Submission(s): 148 Problem Description An Arc of Dream is a curve defined by following function:wherea0 = A0ai = ai-1…

由式子的性质发现都是线性的,考虑构造矩阵,先有式子,a[i] = ax * a[i-1] + ay; b[i] = bx*b[i-1] +by; a[i]*b[i] = ax*bx*a[i-1]*b[i-1] + ax*by*a[i-1] + bx*ay*b[i-1]+ay*by; s[i] = s[i-1] + a[i-1]*b[i-1]; 由此得到递推式 :设矩阵A= ax 0 0 0 ay 0 bx 0 0 by ax*by bx*ay ax*bx 0 ay*by 0 0 1 1 0 0…

思路:构造矩阵 a[i]*b[i]=ax*bx*a[i-1]*b[i-1]+ax*by*a[i-1]+ay*bx*b[i-1]+ay*by 代码如下: #include<iostream> #include<cstdio> #include<cstring> #include<cmath> #include<algorithm> #include<map> #define ll __int64 #define mod 10000000…

题意:略 构造出矩阵就行了 |   AX   0    AXBY   AXBY       0  |                                                                       |   0     BX    AYBX    AYBX    0  | {a[i-1]   b[i-1]   a[i-1]*b[i-1]  AoD[i-1]  1}*        |   0     0      AXBX      AXBX   0  …

Problem Description An Arc of Dream is a curve defined by following function: where a0 = A0 ai = ai-*AX+AY b0 = B0 bi = bi-*BX+BY What ,,,?   Input There are multiple test cases. Process to the End of File. Each test nonnegative integers as follows:…

标题效果:你就是给你一程了两个递推公式公式,第一个让你找到n结果项目. 注意需要占用该公式的复发和再构造矩阵. Arc of Dream Time Limit: 2000/2000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others) Total Submission(s): 2092    Accepted Submission(s): 664 Problem Description An Arc of Dream is a…