Sum Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Problem Description There is a number sequence A1,A2....An,you can select a interval [l,r] or not,all the numbers Ai(l≤i≤r) will become f(Ai).f(x)=(1890x+143)mod1
Number String Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1935 Accepted Submission(s): 931 Problem Description The signature of a permutation is a string that is computed as follows: for
M - 基础DP Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Description Many years ago , in Teddy’s hometown there was a man who was called “Bone Collector”. This man like to collect varies of bones , such as dog’s , cow’s ,
从低端到顶端求个最大值: 思路: 基础DP,递推 #include<cstdio> #include<queue> #include<map> #include<string> #include<string.h> #include<iostream> #include<algorithm> using namespace std; typedef long long LL; const int INF=0x3f3f3f3
The King’s Ups and Downs Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 582 Accepted Submission(s): 409 Problem Description The king has guards of all different heights. Rather than line the
从低端向上,每个结点取下一层左右结点最大值和本身价值相加,dp[0][0]为最后结果 #include<iostream> #include<algorithm> #include<cstdio> using namespace std; #define MAXN 510 typedef long long LL; LL a[MAXN][MAXN],dp[MAXN][MAXN]; LL sum = ,level; int main() { int i,j; scanf(
数塔 Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 33850 Accepted Submission(s): 20206 Problem Description 在讲述DP算法的时候,一个经典的例子就是数塔问题,它是这样描述的: 有如下所示的数塔,要求从顶层走到底层,若每一步只能走到相邻的结点,则经过的结点的数字之和最大是多少?