Racing Car Computer Input: Standard Input Output: Standard Output   The racing cars of today are equipped with so many sophisticated equipment. Introduction of a new visual transducer which is interfaced with the on-board computer can tell you on the…

题意:电脑记录了某一时刻每个赛车的前面和后面个有多少辆车(多个车并排时在别的车那只算一辆),问最少有多少个不合理的数据. 分析:看到n<=1000时,就尽量往DP上想吧. 每输入一组数据a,b,如果a+b>=n肯定不行,加上自己就超过n了.否则这个车肯定在(a+1,n-b)这段区间内,所以这段区间内的车子数(cnt[][]记录)++,如果车子数大于区间长度,就不再加了.搞完输入数据后,再来DP: 定义:dp[i] :前 i 辆车最多有多少车位置合理 则有方程: dp[i] = min(dp[j…

Computer Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3075    Accepted Submission(s): 1561 Problem Description A school bought the first computer some time ago(so this computer's id is 1). Du…

http://acm.split.hdu.edu.cn/showproblem.php?pid=2196 Computer     Description A school bought the first computer some time ago(so this computer's id is 1). During the recent years the school bought N-1 new computers. Each new computer was connected t…

题目链接:  HDU 2196 Computer 分析:   先从任意一点开始, 求出它到其它点的最大距离, 然后以该点为中心更新它的邻点, 再用被更新的点去更新邻点......依此递推 ! 代码: #include <iostream> #include <cstdio> #include <cmath> #include <cstdlib> #include <string> #include <cstring> #include…

题目大意:给N个点,求每个点的与其他点距离最大值 很经典的树形dp...很久前就想写来着...看了陈老师的code才会的...mx[x][0], mx[x][1]分别表示x点子树里最长的2个距离, dfs一遍得到. mx[x][2]表示从x的父亲到x的最长路径长度, 也是dfs一遍得到(具体看代码).最后答案就是max(mx[x][0], mx[x][2]). 时间复杂度O(N) ----------------------------------------------------------…

Computer Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 31049    Accepted Submission(s): 3929 Problem Description A school bought the first computer some time ago(so this computer's id is 1). D…

1166. Computer Transformat Constraints Time Limit: 1 secs, Memory Limit: 32 MB Description A sequence consisting of one digit, the number 1 is initially written into a computer. At each successive time step, the computer simultaneously tranforms each…

Computer Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 34390    Accepted Submission(s): 5383 Problem Description A school bought the first computer some time ago(so this computer's id is 1). D…

A school bought the first computer some time ago(so this computer's id is 1). During the recent years the school bought N-1 new computers. Each new computer was connected to one of settled earlier. Managers of school are anxious about slow functionin…