题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=6050 题意:题目很短自己看吧, 就是这个递推式子,说的很清楚了,让你求F(m,1).题解里面分什么奇偶性分别去算,有些人找规律找出来了,题解是非常严谨的用数学推出来了(反正没有看懂),虽然也用到了矩阵快速幂. 思路:拿到这个题,我第一反应也是矩阵快速幂,然后手推了第二行,我发现第二行依旧满足上面F(2,i)=F(2,i-1)+2*F(2,i-2)这个性质.所以我就萌生一个想法,我先把一行算出来,然后…

FFF at Valentine Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1060    Accepted Submission(s): 506 Problem Description At Valentine's eve, Shylock and Lucar were enjoying their time as any oth…

Dying Light Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 513    Accepted Submission(s): 122 Problem Description LsF is visiting a local amusement park with his friends, and a mirror room su…

CSGO Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 127    Accepted Submission(s): 20 Problem Description Senior Pan is crazy about CSGO and she is so skilled. She can kill every enemy she sp…

Ch’s gift Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1354    Accepted Submission(s): 496 Problem Description Mr. Cui is working off-campus and he misses his girl friend very much. After a w…

Big binary tree Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 597    Accepted Submission(s): 207 Problem Description You are given a complete binary tree with n nodes. The root node is numbere…

Colorful Tree Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 1539    Accepted Submission(s): 616 Sample Input 3 1 2 1 1 2 2 3 6 1 2 1 3 2 1 1 2 1 3 2 4 2 5 3 6 Sample Output Case #1: 6 Case #…

Function Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 652    Accepted Submission(s): 267 Sample Input 3 2 1 0 2 0 1 3 4 2 0 1 0 2 3 1 Sample Output Case #1: 4 Case #2: 4 Source 2017 Multi-U…

Balala Power! Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 2668    Accepted Submission(s): 562 Problem Description Sample Input 1 a 2 aa bb 3 a ba abc Sample Output Case #1: 25 Case #2: 132…

KazaQ's Socks Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 338    Accepted Submission(s): 212 Sample Input 3 7 3 6 4 9 Sample Output Case #1: 3 Case #2: 1 Case #3: 2 Source 2017 Multi-Unive…