TC SRM 521 (div. 2) 1000'

　　比赛时候没搞出来，在赛后好像只能提交不能评测不知道为什么，故我也不知道自己搞得对不对。不过这道题让我会用了map（看了同一房间里面的一个大牛的代码后，而且这个大牛是个中学生好像……）。

#include <algorithm>
#include <bitset>
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <utility>
#include <vector>
using namespace std;
const double pi = acos(-1.0);
const double eps = 1e-11;
class SquaredSubsets
{
public:
long long countSubsets(int n, vector <int> x, vector <int> y)
{
	int s = x.size(), h = 0, v = 0;
	long x0[551], y0[551];
	map <long long, bool> mymap;
	long long sum = 0;

	n <<= 1;
	for(int i = 0; i < s; i++)
	{
		x[i] <<= 1;
		y[i] <<= 1;
		x0[++h] = x[i];
		x0[++h] = x[i] - 1;
		x0[++h] = x[i] + n + 1;
		y0[++v] = y[i];
		y0[++v] = y[i] - 1;
		y0[++v] = y[i] + n + 1;
	}
	mymap[0] = 1;
	for(int i = 1; i <= h; i++)
		for(int j = 1; j <= h; j++)
		{
			long long SC = 0;

			for(int k = 0; k < s; k++)
				if(x[k] >= x0[i] - n && x[k] <= x0[i] && y[k] >= y0[j] - n && y[k] <= y0[j])
					SC |= 1 << k;
			if(!mymap.count(SC))
			{
				sum++;
				mymap[SC] = 1;
			}
		}

	return sum;
}
};