原题链接 解法一:递归 #include<cstdio> #include<algorithm> using namespace std; long long n,x,y; long long solve(int m) { ) return x; ==){ ); ); long long t3=n*x; return min(t3,min(t1,t2)+x); } )+y; long long t2=m*x; return min(t1,t2); } int main() { wh…

题目链接: Water problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 23    Accepted Submission(s): 14 Problem Description If the numbers 1 to 5 are written out in words: one, two, three, four, fi…

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A water problem 题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5832 Description Two planets named Haha and Xixi in the universe and they were created with the universe beginning. There is 73 days in Xixi a year and 137 days in Haha a year. Now you k…

A water problem 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5832 Description Two planets named Haha and Xixi in the universe and they were created with the universe beginning. There is 73 days in Xixi a year and 137 days in Haha a year. Now you k…

A water problem Time Limit: 5000/2500 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 342    Accepted Submission(s): 187 Problem Description Two planets named Haha and Xixi in the universe and they were created with…

http://acm.hdu.edu.cn/showproblem.php?pid=4974 话说是签到题,我也不懂什么是签到题. A simple water problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 196    Accepted Submission(s): 124 Problem Description Dr…

HDU 4974 A simple water problem pid=4974" target="_blank" style="">题目链接 签到题,非常easy贪心得到答案是(sum + 1) / 2和ai最大值的最大值 代码: #include <cstdio> #include <cstring> #include <algorithm> using namespace std; const int N =…

这题太难了...看了30篇题解才整明白到底咋回事... 核心思想:状压dp+搜索+容斥 首先我们分析一下,对于一个4*7的棋盘,低点的个数至多只有8个(可以数一数) 这样的话,我们可以进行一个状压,把所有的低点压进来 然后我们从小到大枚举所有数,转移即可 记状态f[i][j]表示到了第i个数,低点的状态为j的方案数 那么在转移的时候,有两个转移方向: ①.如果第i个数放在低点上,那么我们可以枚举所有的低点k,如果低点没有在状态里,有: dp[i][j|(1<<k)]+=dp[i-1][j] ②…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5443 The Water Problem Time Limit: 1500/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others) Total Submission(s): 1084    Accepted Submission(s): 863 Problem Description In Land waterless…