CodeForces - 1331E Jordan Smiley(图形转换)
题目链接:点击查看
题目大意:给出一个 64 * 64 的图形,现在问点 ( x , y ) 是在图形内部还是外部
题目分析:很直接的一道题目,如果有耐心但缺乏技术的同学完全可以直接一个一个数着做,只不过万一有一个数错了就gg了
补题的时候花了一个多小时去学习了转换图形的技术,好在中间没有出什么岔子,还算顺利的把这个题目解决掉了,顺便收获了很多知识
因为最近也是在入门matlab(虽然目前只看到了向量,连循环都还没接触),硬是一直百度,最后学会了如何处理图片
首先我们需要将图形放到画图中进行两个操作:
- 将内部颜色填充为黑色或其他颜色
- 将分辨率设置为 64 * 64
这一步比较简单,接下来利用matlab写一段小程序将上述图片提取为 01 矩阵
这个时候得到的每个像素并不是严格意义上的01矩阵,而是0~255的一个数值,我们只需要自己规定一个阈值,将0和1区分开来就好了,顺便规划一下在数组中的格式,这里用C++完成就好了
最后就是把处理好的01矩阵扔到二维数组中,剩下的O(1)回答就好了
代码:
#include<iostream>
#include<cstdio>
#include<string>
#include<ctime>
#include<cmath>
#include<cstring>
#include<algorithm>
#include<stack>
#include<climits>
#include<queue>
#include<map>
#include<set>
#include<sstream>
#include<unordered_map>
using namespace std;typedef long long LL;typedef unsigned long long ull;const int inf=0x3f3f3f3f;const int N=64;bool maze[N][N]=
{
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{1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1},
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{1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1},
{1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1},
{1,1,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1},
{1,1,1,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,1,1},
{1,1,1,0,0,0,0,0,0,0,1,1,1,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,1,1,1,1,0,0,0,0,0,0,1,1,1},
{1,1,1,0,0,0,0,0,0,0,1,0,1,0,1,0,1,1,0,1,0,1,1,1,0,0,1,0,1,0,0,1,1,0,1,0,1,1,0,1,0,0,1,1,1,0,0,1,1,1,1,1,0,1,0,0,0,0,0,0,0,1,1,1},
{1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,0,0,1,1,1,1,1,0,1,1,1,1,1,1,1,0,0,1,1,1,0,0,1,1,1,1,1,1,0,1,0,1,1,0,0,0,1,0,0,0,0,0,0,0,0,1,1,1,1},
{1,1,1,1,1,0,0,0,0,0,0,0,1,0,1,1,0,0,0,0,1,0,0,0,0,1,0,0,0,1,1,0,0,0,1,1,1,1,0,0,0,1,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0,0,0,1,1,1,1,1},
{1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,1,0,1,1,0,1,1,0,1,1,1,0,1,0,0,0,0,1,0,0,0,1,0,0,1,0,1,1,1,1,1,0,1,1,1,0,0,0,0,0,0,0,0,0,1,1,1,1,1},
{1,1,1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,1,0,0,1,0,0,1,0,1,1,1,1,0,1,1,1,0,1,0,1,1,1,1,0,0,0,1,0,1,1,1,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1},
{1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,1,0,0,1,1,1,0,0,0,0,0,1,0,0,1,0,1,0,1,1,1,0,1,0,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,1,1,0,0,0,1,1,0,1,0,1,1,1,0,0,0,1,1,1,0,1,0,0,0,1,1,0,1,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,1,1,1,0,0,0,1,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,1,0,0,1,1,1,1,0,1,0,1,1,1,1,1,1,0,1,1,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,1,0,0,1,0,0,1,0,1,0,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,1,1,1,1,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
};int main()
{
#ifndef ONLINE_JUDGE
// freopen("input.txt","r",stdin);
// freopen("output.txt","w",stdout);
#endif
// ios::sync_with_stdio(false);int x,y;scanf("%d%d",&x,&y);if(maze[x][y])puts("OUT");elseputs("IN");return 0;
}
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