from math import gcd
import sys

mx = 1000
v = []
for x in range(1, mx):
    for y in range(1, mx - x + 1):
        if gcd(x, y) == 1:
            v.append((x, y))
v.sort(key=lambda a: a[1] / a[0])
v = v[:250000]
print(1000000)
X, Y = 0, 0
for x, y in v:
    print(X, Y)
    X += x
    Y += y
for x, y in v:
    print(X, Y)
    X += -y
    Y += x
for x, y in v:
    print(X, Y)
    X += -x
    Y += -y
for x, y in v:
    print(X, Y)
    X += y
    Y += -x
sys.stdout.flush()