import sys

input = sys.stdin.readline

def pow_dist(x1, y1, x2, y2) :
    return (x1-x2)**2 + (y1-y2)**2

for _ in range(int(input())) :
    x1, y1, x2, y2 = map(int, input().split())
    
    count = 0
    for _ in range(int(input())) :
        cx, cy, cr = map(int, input().split())
        dist1 = pow_dist(x1,y1,cx,cy)
        dist2 = pow_dist(x2,y2,cx,cy)
        pow_cr = cr**2
        
        if pow_cr > dist1 and pow_cr > dist2 :
            pass
        elif pow_cr > dist1 or pow_cr > dist2 :
            count += 1
    
    print(count)