n = 10**5
r = 10**5
ans = []
a,b = r, 0
import math
print(n)
print(a,b)
for i in range(1, n):
  d_rad = math.radians((360 * i)/n)
  a_rotated = a * math.cos(d_rad) - b * math.sin(d_rad)
  b_rotated = a * math.sin(d_rad) + b * math.cos(d_rad)
  print(a_rotated,b_rotated)