Description Seiji Hayashi had been a professor of the Nisshinkan Samurai School in the domain of Aizu for a long time in the 18th century. In order to reward him for his meritorious career in education, Katanobu Matsudaira, the lord of the domain of…

Get Many Persimmon Trees Time Limit:1000MS    Memory Limit:30000KB    64bit IO Format:%I64d & %I64u SubmitStatusPracticePOJ 2029 Description Seiji Hayashi had been a professor of the Nisshinkan Samurai School in the domain of Aizu for a long time in…

Get Many Persimmon Trees Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 3243 Accepted: 2113 Description Seiji Hayashi had been a professor of the Nisshinkan Samurai School in the domain of Aizu for a long time in the 18th century. In orde…

连接:http://poj.org/problem?id=2029 题意:给你一个map,然后在上面种树,问你h*w的矩形上最多有几棵树~这题直接搜就可以.不能算是DP 用树状数组也可作. #include <stdio.h> #include <string.h> #include <iostream> #include <algorithm> #include <stdlib.h> #include <vector> #inclu…

题目链接 题意 : 给你每个柿子树的位置,给你已知长宽的矩形,让这个矩形包含最多的柿子树.输出数目 思路 :数据不是很大,暴力一下就行,也可以用二维树状数组来做. #include <stdio.h> #include <string.h> #include <iostream> using namespace std ; ][] ; int main() { int N ,S,T ,W,H; while(scanf("%d",&N) !=…

题目链接 又是一道完全自己想出来的dp题. 题意:一个w*h的图中,有n个点,给一个s*t的圈,求这个圈能 圈的最多的点 分析:d[i][j]代表i行j列 到第一行第一列的这个方框内有多少个点, 然后枚举圈的右下角的点, 计算在圈的范围的点的方法为 d[i][j]-d[i][j-s]-d[i-t][j]+d[i-t][j-s]. #include <iostream> #include <cstring> #include <cstdio> #include <a…

题意:在w*h(最大100*100)的棋盘上,有的格子中放有一棵树,有的没有.问s*t的小矩形,最多能含有多少棵树. 解法:最直接的想法,设d[x1][y1][x2][y2]表示选择以(x1, y1)为左下角,以(x2, y2)为右上角的矩形含有多少棵树.然后就可以很容易地递推了.可是空间复杂度为O(10^8)不能被接受. 又发现d[x1][y1][x2][y2] = d[1][1][x2][y2] - d[1][1][x1-1][y2] - d[1][1][x2][y1-1] + d[1][1…

<题目链接> 题目大意: 给你一个H*W的矩阵,再告诉你有n个坐标有点,问你一个w*h的小矩阵最多能够包括多少个点. 解题分析:二维树状数组模板题. #include <cstdio> #include <cstring> #include <algorithm> using namespace std; +; int tr[M][M]; int n,W,H,w,h; int lowbit(int x){return x&(-x);} void ad…

题意:给出一个h*w的矩形,再给出n个坐标,在这n个坐标种树,再给出一个s*t大小的矩形,问在这个s*t的矩形里面最多能够得到多少棵树 二维的树状数组,求最多能够得到的树的时候,因为h,w都不超过500,直接暴力 #include<iostream> #include<cstdio> #include<cstring> #include <cmath> #include<stack> #include<vector> #include…

Get Many Persimmon Trees Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 3987 Accepted: 2599 Description Seiji Hayashi had been a professor of the Nisshinkan Samurai School in the domain of Aizu for a long time in the 18th century. In orde…