HDU 5538 House Building (简单模拟)
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题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5538
题面:
House Building
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 817 Accepted Submission(s): 499
Problem Description
Have you ever played the video game Minecraft? This game has been one of the world's most popular game in recent years. The world of Minecraft is made up of lots of1×1×1 blocks in a 3D map. Blocks are the basic units of structure in Minecraft, there are many types of blocks. A block can either be a clay, dirt, water, wood, air, ... or even a building material such as brick or concrete in this game.
Figure 1: A typical world in Minecraft.
Nyanko-san is one of the diehard fans of the game, what he loves most is to build monumental houses in the world of the game. One day, he found a flat ground in some place. Yes, a super flat ground without any roughness, it's really a lovely place to build houses on it. Nyanko-san decided to build on an×m big flat ground, so he drew a blueprint of his house, and found some building materials to build.
While everything seems goes smoothly, something wrong happened. Nyanko-san found out he had forgotten to prepare glass elements, which is a important element to decorate his house. Now Nyanko-san gives you his blueprint of house and asking for your help. Your job is quite easy, collecting a sufficient number of the glass unit for building his house. But first, you have to calculate how many units of glass should be collected.
There aren rows and m columns on the ground, an intersection of a row and a column is a 1×1 square,and a square is a valid place for players to put blocks on. And to simplify this problem, Nynako-san's blueprint can be represented as an integer arrayci,j(1≤i≤n,1≤j≤m) . Which ci,j indicates the height of his house on the square of i -th row and j -th column. The number of glass unit that you need to collect is equal to the surface area of Nyanko-san's house(exclude the face adjacent to the ground).
Nyanko-san is one of the diehard fans of the game, what he loves most is to build monumental houses in the world of the game. One day, he found a flat ground in some place. Yes, a super flat ground without any roughness, it's really a lovely place to build houses on it. Nyanko-san decided to build on a
While everything seems goes smoothly, something wrong happened. Nyanko-san found out he had forgotten to prepare glass elements, which is a important element to decorate his house. Now Nyanko-san gives you his blueprint of house and asking for your help. Your job is quite easy, collecting a sufficient number of the glass unit for building his house. But first, you have to calculate how many units of glass should be collected.
There are
Input
The first line contains an integer T indicating the total number of test cases.
First line of each test case is a line with two integersn,m .
Then lines that follow describe the array of Nyanko-san's blueprint, the i -th of these lines has m integers ci,1,ci,2,...,ci,m , separated by a single space.
1≤T≤50
1≤n,m≤50
0≤ci,j≤1000
First line of each test case is a line with two integers
The
Output
For each test case, please output the number of glass units you need to collect to meet Nyanko-san's requirement in one line.
Sample Input
23 31 0 03 1 21 1 03 31 0 10 0 01 0 1
Sample Output
3020Figure 2: A top view and side view image for sample test case 1.
Source
2015ACM/ICPC亚洲区长春站-重现赛(感谢东北师大)
题意:
给定一个n*m的矩阵代表建筑物的高度,求除去底面外的建筑表面积。
解题:
俯视图表面积计算只需统计非0值的数量,即为面积。
侧视图表面积则分别计算某一点与前后左右差值,若差值为正(即高出部分),则加入结果。
代码:
#include<iostream>#include<cstdio>#include<cmath>#include<cstring>#include <algorithm>using namespace std;int map[55][55],dir[4][2]={-1,0,0,-1,1,0,0,1};int main(){int t,n,m,ans;scanf("%d",&t);while(t--){ans=0;memset(map,0,sizeof(map));scanf("%d%d",&n,&m); for(int i=1;i<=n;i++){for(int j=1;j<=m;j++){ scanf("%d",&map[i][j]); if(map[i][j])ans++;}}for(int i=1;i<=n;i++){for(int j=1;j<=m;j++){for(int k=0;k<4;k++){ if(map[i][j]>map[i+dir[k][0]][j+dir[k][1]]) ans+=map[i][j]-map[i+dir[k][0]][j+dir[k][1]];}}}printf("%d\n",ans);}return 0;}
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