#!/bin/python

import sys

def max_points(latitude, longitude, x, y, lats, longs, heights, points, isFirst=False):
    if len(lats) == 0:
        return 0
    if isFirst or (abs(lats[0] - latitude) <= x and abs(longs[0] - longitude) <= y):   # first city qualifies
        return max(points[0] + max_points(lats[0], longs[0], x, y, lats[1:], longs[1:], heights[1:], points[1:]), max_points(latitude, longitude, x, y, lats[1:], longs[1:], heights[1:], points[1:]))
    else:
        return max_points(latitude, longitude, x, y, lats[1:], longs[1:], heights[1:], points[1:])

n,x,y = raw_input().strip().split(' ')
n,x,y = [int(n),int(x),int(y)]
cities = []
for a0 in xrange(n):
    latitude,longitude,height,points = raw_input().strip().split(' ')
    latitude,longitude,height,points = [int(latitude),int(longitude),int(height),int(points)]
    # your code goes here
    cities.append([latitude, longitude, height, points])
cities.sort(key=lambda x: x[3])
print 5