https://www.hackerrank.com/contests/w8/challenges/gneck 有点意思.是DP,最优解包含最优子问题.F(X)=F(X-1)+F(X-3).因为F(X-1)右边放个“R”和F(X-3)右边放"RRB"是左右可以互推的,包含全了最右是R和B的两种情况. #include <iostream> using namespace std; const uint64_t MOD = 1000000007; uint64_t resol…

D. Om Nom and Necklace time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output One day Om Nom found a thread with n beads of different colors. He decided to cut the first several beads from this th…

题目链接 :http://acm.hdu.edu.cn/showproblem.php?pid=6030 Problem Description Little Q wants to buy a necklace for his girlfriend. Necklaces are single strings composed of multiple red and blue beads. Little Q desperately wants to impress his girlfriend,…

传送门:点我 Little Q wants to buy a necklace for his girlfriend. Necklaces are single strings composed of multiple red and blue beads. Little Q desperately wants to impress his girlfriend, he knows that she will like the necklace only if for every prime l…

Happy Necklace                                                                           Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)                                                                            …

D. Om Nom and Necklace time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output One day Om Nom found a thread with n beads of different colors. He decided to cut the first several beads from this th…

Happy Necklace Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 1146    Accepted Submission(s): 491 Problem Description Little Q wants to buy a necklace for his girlfriend. Necklaces are single…

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 222    Accepted Submission(s): 91 Problem Description Little Q wants to buy a necklace for his girlfriend. Necklaces are single strings compose…

Problem Description Little Q wants to buy a necklace for his girlfriend. Necklaces are single strings composed of multiple red and blue beads. Little Q desperately wants to impress his girlfriend, he knows that she will like the necklace only if for…

题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=5730 Description Perhaps the sea‘s definition of a shell is the pearl. However, in my view, a shell necklace with n beautiful shells contains the most sincere feeling for my best lover Arrietty, but…