题目链接

#include <iostream>
#include <algorithm>
#include <cstring>
#include <cmath>

using namespace std;

#define N 500005

struct node
{
	int x, y;
	int id;
	bool friend operator < (const node a, const node b)
	{
		if (a.x == b.x)
		{
			return a.y < b.y;
		}	
		return a.x < b.x;
	}
}q[N], p[N];

int r[N * 3 + 10], l[N * 3 + 10];

int lowBit(int x)
{
	return x & -x;
}

int get_sum(int *a, int k)
{
	int sum = 0;
	
	while (k)
	{
		sum += a[k];
		k -= lowBit(k);
	}
	return sum;	
} 

void update(int *a, int k, int delta)
{
	while (k <= N)
	{
		a[k] += delta;
		k += lowBit(k);
	}
}

int main()
{
	int t;
	
	scanf("%d", &t);
	
	while (t--)
	{
		int n, m;
		int ans[N];
		scanf("%d%d", &n, &m);
		
		for (int i = 1; i <= n; i++)
		{
			scanf("%d%d", &q[i].x, &q[i].y);
		}
		
		for (int i = 1; i <= m; i++)
		{
			scanf("%d%d", &p[i].x, &p[i].y);
			p[i].id = i;
		}
		
		sort(q + 1, q + 1 + n);
		sort(p + 1, p + 1 + m);
		
		memset(r, 0, sizeof(l));
		memset(l, 0, sizeof(r));
		
		for (int i = 1; i <= n; i++)
		{
			update(r, q[i].y + 1, 1);
		}
		
		int px, py;
		int j = 1;
 		for (int i = 1; i <= m; i++)
		{
          	px = p[i].x;
			py = p[i].y;
 			while (j <= n)
			{
				if (q[j].x > px)
				{
					int r_cnt = get_sum(r, N) - get_sum(r, py + 1) + get_sum(l, py + 1); 
					int l_cnt = n -r_cnt;
					ans[p[i].id] = abs(r_cnt - l_cnt); 
					break;
				}
				update(l, q[j].y + 1, 1);
				update(r, q[j].y + 1, -1);
				j++;
			}
		}
		
		for (int k = 1; k <= m; k++)
		{
			printf("%d\n", ans[k]);
		}
		putchar(10);
	}
	
	return 0;
}