# Unfinish
from typing import Tuple, List
import math

n, m, r = input().split(" ")
locations: List[Tuple[str, str]] = []
for i in range(int(m)):
    location: Tuple[str, str] = tuple(input().split(" "))
    locations.append(location)

map = [[0 for _ in range(int(n))] for _ in range(int(n))]
count = 0

for i in range(int(n)):
    for j in range(int(n)):
        if map[i][j] == 0:
            for k in range(int(m)):
                distance = math.sqrt(
                    (int(locations[k][0]) - i) ** 2 + (int(locations[k][1]) - j) ** 2
                )
                if distance <= float(r):
                    map[i][j] = 1
                    count = count + 1
                    break

print(count)
print(map)