import math
import random


N = 10**6
st = set()
ok = False
for i in range(1, 1300):
    for j in range(1, 1300):
        g = math.gcd(i, j)
        st.add((math.atan2(j//g, i//g), i//g, j//g))
        if len(st) == N:
            ok = True
            break
    if ok == True:
        break
L = list(st)
L.sort()

ans = []
nowx = -10**9 + 1
nowy = -10**9 + 1
for i in range(N):
    x, y = L[i][1], L[i][2]
    nowx += x
    nowy += y
    ans.append((nowx, nowy))

print(N)
for i in range(N):
    print(ans[i][0], ans[i][1])





# N = 10**6
# L = [0]
# x = random.randint(1, 10**9)
# y = random.randint(1, 10**9)
# L.append((math.atan2(x,y), x, y))