四分树

四分树

例题:uva297

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/*
uva297
the std is wrong, str should be larger
*/
#include<iostream>
#include<cstdio>
#include<cstring>
#include<cstdlib>
using namespace std;
int t;
const int maxa=33;
const int maxn=1033;
char s[maxn*maxn];
bool pic[maxa][maxa];
int cnt;
void draw(char* s,int& pos,int x,int y,int a)
{
	++pos;
	if(s[pos]=='p')
	{
		draw(s,pos,x,y+a/2,a/2);
		draw(s,pos,x,y,a/2);
		draw(s,pos,x+a/2,y,a/2);
		draw(s,pos,x+a/2,y+a/2,a/2);
	}
	else if(s[pos]=='f')
	{
		for(int i=x;i<=x+a-1;++i)
			for(int j=y;j<=y+a-1;++j)
				if(!pic[i][j])
					pic[i][j]=true,++cnt;
	}
}
int main()
{
	freopen("uva297_2.in","r",stdin);
	freopen("uva297.out","w",stdout);
	for(scanf("%d\n",&t);t;--t)
	{
		memset(pic,0,sizeof(pic));
		cnt=0;
		for(int i=1;i<=2;++i)
		{
			scanf("%s",s);
			int p=-1;
			draw(s,p,1,1,32);
		}
		printf("There are %d black pixels.\n",cnt);
	}
	
	return 0;
}
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