思路:Hash。对于每个(x,y,z)坐标的立方体,映射为x*n*n+y*n+z,判断有多少个不同数字即为删去立方体个数。
#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
using namespace std;
int n,m;
vector<int> ans;
inline int Hash(int x,int y,int z)
{
return x*n*n+y*n+z;
}
int main()
{
int t;
scanf("%d",&t);
while(t--)
{
ans.clear();
scanf("%d%d",&n,&m);
for(int i=0; i<m; i++)
{
char ch1,ch2;
int pos1,pos2;
getchar();
scanf("%c=%d,%c=%d",&ch1,&pos1,&ch2,&pos2);
if(ch1=='Y')
{
if(ch2=='X')
{
for(int z=1; z<=n; z++)
ans.push_back(Hash(pos2,pos1,z));
}
else
{
for(int x=1; x<=n; x++)
ans.push_back(Hash(x,pos1,pos2));
}
}
else if(ch1=='X')
{
if(ch2=='Y')
{
for(int z=1; z<=n; z++)
ans.push_back(Hash(pos1,pos2,z));
}
else
{
for(int y=1; y<=n; y++)
ans.push_back(Hash(pos1,y,pos2));
}
}
else if(ch1=='Z')
{
if(ch2=='Y')
{
for(int x=1; x<=n; x++)
ans.push_back(Hash(x,pos2,pos1));
}
else
{
for(int y=1; y<=n; y++)
ans.push_back(Hash(pos2,y,pos1));
}
}
}
sort(ans.begin(),ans.end());
int num=unique(ans.begin(),ans.end())-ans.begin();
printf("%d\n",num);
}
return 0;
}Hdu 3682 To Be an Dream Architect(Hash)
原文:http://blog.csdn.net/wang2147483647/article/details/52217429